119 lines
3.0 KiB
Go
119 lines
3.0 KiB
Go
// Copyright (c) 2013-2016 The btcsuite developers
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// Copyright (c) 2015-2016 The Decred 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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"strconv"
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"strings"
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)
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const (
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// InitialProcotolVersion is the initial protocol version for the
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// network.
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InitialProcotolVersion uint32 = 1
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// ProtocolVersion is the latest protocol version this package supports.
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ProtocolVersion uint32 = 3
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// BIP0111Version is the protocol version which added the SFNodeBloom
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// service flag.
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BIP0111Version uint32 = 2
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// SendHeadersVersion is the protocol version which added a new
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// sendheaders message.
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SendHeadersVersion uint32 = 3
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)
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// ServiceFlag identifies services supported by a decred peer.
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type ServiceFlag uint64
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const (
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// SFNodeNetwork is a flag used to indicate a peer is a full node.
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SFNodeNetwork ServiceFlag = 1 << iota
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// SFNodeBloom is a flag used to indiciate a peer supports bloom
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// filtering.
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SFNodeBloom
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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 sfStrings = map[ServiceFlag]string{
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SFNodeNetwork: "SFNodeNetwork",
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SFNodeBloom: "SFNodeBloom",
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}
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// orderedSFStrings is an ordered list of service flags from highest to
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// lowest.
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var orderedSFStrings = []ServiceFlag{
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SFNodeNetwork,
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SFNodeBloom,
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}
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// String returns the ServiceFlag in human-readable form.
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func (f ServiceFlag) String() string {
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// No flags are set.
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if f == 0 {
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return "0x0"
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}
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// Add individual bit flags.
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s := ""
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for _, flag := range orderedSFStrings {
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if f&flag == flag {
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s += sfStrings[flag] + "|"
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f -= flag
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}
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}
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// Add any remaining flags which aren't accounted for as hex.
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s = strings.TrimRight(s, "|")
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if f != 0 {
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s += "|0x" + strconv.FormatUint(uint64(f), 16)
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}
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s = strings.TrimLeft(s, "|")
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return s
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}
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// CurrencyNet represents which decred network a message belongs to.
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type CurrencyNet uint32
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// Constants used to indicate the message decred network. They can also be
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// used to seek to the next message when a stream's state is unknown, but
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// this package does not provide that functionality since it's generally a
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// better idea to simply disconnect clients that are misbehaving over TCP.
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const (
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// MainNet represents the main decred network.
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MainNet CurrencyNet = 0xd9b400f9
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// TestNet represents the regression test network.
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RegTest CurrencyNet = 0xdab500fa
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// TestNet represents the test network (version 3).
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TestNet CurrencyNet = 0x0709000b
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// SimNet represents the simulation test network.
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SimNet CurrencyNet = 0x12141c16
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)
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// bnStrings is a map of decred networks back to their constant names for
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// pretty printing.
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var bnStrings = map[CurrencyNet]string{
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MainNet: "MainNet",
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TestNet: "TestNet",
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RegTest: "RegNet",
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SimNet: "SimNet",
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}
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// String returns the CurrencyNet in human-readable form.
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func (n CurrencyNet) String() string {
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if s, ok := bnStrings[n]; ok {
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return s
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}
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return fmt.Sprintf("Unknown CurrencyNet (%d)", uint32(n))
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}
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