1b359e1131
This commit introduces the new SFNodeWitness service bit which has been added to the protocol as part of BIP0144. The new service bit allows peers on the network to signal their acceptance and adherence to the new rules defined as part of the segwit soft-fork package.
155 lines
4.2 KiB
Go
155 lines
4.2 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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"strconv"
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"strings"
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)
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const (
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// ProtocolVersion is the latest protocol version this package supports.
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ProtocolVersion uint32 = 70013
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// MultipleAddressVersion is the protocol version which added multiple
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// addresses per message (pver >= MultipleAddressVersion).
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MultipleAddressVersion uint32 = 209
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// NetAddressTimeVersion is the protocol version which added the
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// timestamp field (pver >= NetAddressTimeVersion).
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NetAddressTimeVersion uint32 = 31402
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// BIP0031Version is the protocol version AFTER which a pong message
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// and nonce field in ping were added (pver > BIP0031Version).
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BIP0031Version uint32 = 60000
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// BIP0035Version is the protocol version which added the mempool
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// message (pver >= BIP0035Version).
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BIP0035Version uint32 = 60002
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// BIP0037Version is the protocol version which added new connection
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// bloom filtering related messages and extended the version message
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// with a relay flag (pver >= BIP0037Version).
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BIP0037Version uint32 = 70001
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// RejectVersion is the protocol version which added a new reject
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// message.
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RejectVersion uint32 = 70002
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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 = 70011
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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 = 70012
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// FeeFilterVersion is the protocol version which added a new
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// feefilter message.
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FeeFilterVersion uint32 = 70013
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)
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// ServiceFlag identifies services supported by a bitcoin 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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// SFNodeGetUTXO is a flag used to indicate a peer supports the
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// getutxos and utxos commands (BIP0064).
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SFNodeGetUTXO
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// SFNodeBloom is a flag used to indicate a peer supports bloom
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// filtering.
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SFNodeBloom
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// SFNodeWitness is a flag used to indicate a peer supports blocks
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// and transactions including witness data (BIP0144).
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SFNodeWitness
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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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SFNodeGetUTXO: "SFNodeGetUTXO",
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SFNodeBloom: "SFNodeBloom",
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SFNodeWitness: "SFNodeWitness",
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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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SFNodeGetUTXO,
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SFNodeBloom,
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SFNodeWitness,
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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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// BitcoinNet represents which bitcoin network a message belongs to.
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type BitcoinNet uint32
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// Constants used to indicate the message bitcoin 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 bitcoin network.
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MainNet BitcoinNet = 0xd9b4bef9
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// TestNet represents the regression test network.
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TestNet BitcoinNet = 0xdab5bffa
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// TestNet3 represents the test network (version 3).
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TestNet3 BitcoinNet = 0x0709110b
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// SimNet represents the simulation test network.
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SimNet BitcoinNet = 0x12141c16
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)
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// bnStrings is a map of bitcoin networks back to their constant names for
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// pretty printing.
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var bnStrings = map[BitcoinNet]string{
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MainNet: "MainNet",
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TestNet: "TestNet",
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TestNet3: "TestNet3",
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SimNet: "SimNet",
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}
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// String returns the BitcoinNet in human-readable form.
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func (n BitcoinNet) 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 BitcoinNet (%d)", uint32(n))
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}
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