1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2022 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_NET_PROCESSING_H
#define BITCOIN_NET_PROCESSING_H
#include <net.h>
#include <txorphanage.h>
#include <validationinterface.h>
#include <chrono>
class AddrMan;
class CChainParams;
class CTxMemPool;
class ChainstateManager;
namespace node {
class Warnings;
} // namespace node
/** Whether transaction reconciliation protocol should be enabled by default. */
static constexpr bool DEFAULT_TXRECONCILIATION_ENABLE{false};
/** Default for -maxorphantx, maximum number of orphan transactions kept in memory */
static const uint32_t DEFAULT_MAX_ORPHAN_TRANSACTIONS{100};
/** Default number of non-mempool transactions to keep around for block reconstruction. Includes
orphan, replaced, and rejected transactions. */
static const uint32_t DEFAULT_BLOCK_RECONSTRUCTION_EXTRA_TXN{100};
static const bool DEFAULT_PEERBLOOMFILTERS = false;
static const bool DEFAULT_PEERBLOCKFILTERS = false;
/** Maximum number of outstanding CMPCTBLOCK requests for the same block. */
static const unsigned int MAX_CMPCTBLOCKS_INFLIGHT_PER_BLOCK = 3;
/** Number of headers sent in one getheaders result. We rely on the assumption that if a peer sends
* less than this number, we reached its tip. Changing this value is a protocol upgrade. */
static const unsigned int MAX_HEADERS_RESULTS = 2000;
struct CNodeStateStats {
int nSyncHeight = -1;
int nCommonHeight = -1;
int m_starting_height = -1;
std::chrono::microseconds m_ping_wait;
std::vector<int> vHeightInFlight;
bool m_relay_txs;
CAmount m_fee_filter_received;
uint64_t m_addr_processed = 0;
uint64_t m_addr_rate_limited = 0;
bool m_addr_relay_enabled{false};
ServiceFlags their_services;
int64_t presync_height{-1};
std::chrono::seconds time_offset{0};
};
struct PeerManagerInfo {
std::chrono::seconds median_outbound_time_offset{0s};
bool ignores_incoming_txs{false};
};
class PeerManager : public CValidationInterface, public NetEventsInterface
{
public:
struct Options {
//! Whether this node is running in -blocksonly mode
bool ignore_incoming_txs{DEFAULT_BLOCKSONLY};
//! Whether transaction reconciliation protocol is enabled
bool reconcile_txs{DEFAULT_TXRECONCILIATION_ENABLE};
//! Maximum number of orphan transactions kept in memory
uint32_t max_orphan_txs{DEFAULT_MAX_ORPHAN_TRANSACTIONS};
//! Number of non-mempool transactions to keep around for block reconstruction. Includes
//! orphan, replaced, and rejected transactions.
uint32_t max_extra_txs{DEFAULT_BLOCK_RECONSTRUCTION_EXTRA_TXN};
//! Whether all P2P messages are captured to disk
bool capture_messages{false};
//! Whether or not the internal RNG behaves deterministically (this is
//! a test-only option).
bool deterministic_rng{false};
//! Number of headers sent in one getheaders message result (this is
//! a test-only option).
uint32_t max_headers_result{MAX_HEADERS_RESULTS};
};
static std::unique_ptr<PeerManager> make(CConnman& connman, AddrMan& addrman,
BanMan* banman, ChainstateManager& chainman,
CTxMemPool& pool, node::Warnings& warnings, Options opts);
virtual ~PeerManager() = default;
/**
* Attempt to manually fetch block from a given peer. We must already have the header.
*
* @param[in] peer_id The peer id
* @param[in] block_index The blockindex
* @returns std::nullopt if a request was successfully made, otherwise an error message
*/
virtual std::optional<std::string> FetchBlock(NodeId peer_id, const CBlockIndex& block_index) = 0;
/** Begin running background tasks, should only be called once */
virtual void StartScheduledTasks(CScheduler& scheduler) = 0;
/** Get statistics from node state */
virtual bool GetNodeStateStats(NodeId nodeid, CNodeStateStats& stats) const = 0;
virtual std::vector<TxOrphanage::OrphanTxBase> GetOrphanTransactions() = 0;
/** Get peer manager info. */
virtual PeerManagerInfo GetInfo() const = 0;
/** Relay transaction to all peers. */
virtual void RelayTransaction(const uint256& txid, const uint256& wtxid) = 0;
/** Send ping message to all peers */
virtual void SendPings() = 0;
/** Set the height of the best block and its time (seconds since epoch). */
virtual void SetBestBlock(int height, std::chrono::seconds time) = 0;
/* Public for unit testing. */
virtual void UnitTestMisbehaving(NodeId peer_id) = 0;
/**
* Evict extra outbound peers. If we think our tip may be stale, connect to an extra outbound.
* Public for unit testing.
*/
virtual void CheckForStaleTipAndEvictPeers() = 0;
/** Process a single message from a peer. Public for fuzz testing */
virtual void ProcessMessage(CNode& pfrom, const std::string& msg_type, DataStream& vRecv,
const std::chrono::microseconds time_received, const std::atomic<bool>& interruptMsgProc) EXCLUSIVE_LOCKS_REQUIRED(g_msgproc_mutex) = 0;
/** This function is used for testing the stale tip eviction logic, see denialofservice_tests.cpp */
virtual void UpdateLastBlockAnnounceTime(NodeId node, int64_t time_in_seconds) = 0;
/**
* Gets the set of service flags which are "desirable" for a given peer.
*
* These are the flags which are required for a peer to support for them
* to be "interesting" to us, ie for us to wish to use one of our few
* outbound connection slots for or for us to wish to prioritize keeping
* their connection around.
*
* Relevant service flags may be peer- and state-specific in that the
* version of the peer may determine which flags are required (eg in the
* case of NODE_NETWORK_LIMITED where we seek out NODE_NETWORK peers
* unless they set NODE_NETWORK_LIMITED and we are out of IBD, in which
* case NODE_NETWORK_LIMITED suffices).
*
* Thus, generally, avoid calling with 'services' == NODE_NONE, unless
* state-specific flags must absolutely be avoided. When called with
* 'services' == NODE_NONE, the returned desirable service flags are
* guaranteed to not change dependent on state - ie they are suitable for
* use when describing peers which we know to be desirable, but for which
* we do not have a confirmed set of service flags.
*/
virtual ServiceFlags GetDesirableServiceFlags(ServiceFlags services) const = 0;
};
#endif // BITCOIN_NET_PROCESSING_H
|
