Bitcoin Core  22.99.0
P2P Digital Currency
net.h
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1 // Copyright (c) 2009-2010 Satoshi Nakamoto
2 // Copyright (c) 2009-2020 The Bitcoin Core developers
3 // Distributed under the MIT software license, see the accompanying
4 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
5 
6 #ifndef BITCOIN_NET_H
7 #define BITCOIN_NET_H
8 
9 #include <addrdb.h>
10 #include <addrman.h>
11 #include <amount.h>
12 #include <bloom.h>
13 #include <chainparams.h>
14 #include <compat.h>
15 #include <crypto/siphash.h>
16 #include <hash.h>
17 #include <i2p.h>
18 #include <net_permissions.h>
19 #include <netaddress.h>
20 #include <netbase.h>
21 #include <policy/feerate.h>
22 #include <protocol.h>
23 #include <random.h>
24 #include <span.h>
25 #include <streams.h>
26 #include <sync.h>
27 #include <threadinterrupt.h>
28 #include <uint256.h>
29 #include <util/check.h>
30 
31 #include <atomic>
32 #include <condition_variable>
33 #include <cstdint>
34 #include <deque>
35 #include <map>
36 #include <memory>
37 #include <optional>
38 #include <thread>
39 #include <vector>
40 
41 class CScheduler;
42 class CNode;
43 class BanMan;
44 struct bilingual_str;
45 
47 static const bool DEFAULT_WHITELISTRELAY = true;
49 static const bool DEFAULT_WHITELISTFORCERELAY = false;
50 
52 static const int TIMEOUT_INTERVAL = 20 * 60;
54 static constexpr auto FEELER_INTERVAL = 2min;
56 static constexpr auto EXTRA_BLOCK_RELAY_ONLY_PEER_INTERVAL = 5min;
58 static const unsigned int MAX_PROTOCOL_MESSAGE_LENGTH = 4 * 1000 * 1000;
60 static const unsigned int MAX_SUBVERSION_LENGTH = 256;
64 static const int MAX_ADDNODE_CONNECTIONS = 8;
66 static const int MAX_BLOCK_RELAY_ONLY_CONNECTIONS = 2;
68 static const int MAX_FEELER_CONNECTIONS = 1;
70 static const bool DEFAULT_LISTEN = true;
72 static const unsigned int DEFAULT_MAX_PEER_CONNECTIONS = 125;
74 static constexpr uint64_t DEFAULT_MAX_UPLOAD_TARGET = 0;
76 static const bool DEFAULT_BLOCKSONLY = false;
78 static const int64_t DEFAULT_PEER_CONNECT_TIMEOUT = 60;
80 static const int NUM_FDS_MESSAGE_CAPTURE = 1;
81 
82 static constexpr bool DEFAULT_FORCEDNSSEED{false};
83 static constexpr bool DEFAULT_DNSSEED{true};
84 static constexpr bool DEFAULT_FIXEDSEEDS{true};
85 static const size_t DEFAULT_MAXRECEIVEBUFFER = 5 * 1000;
86 static const size_t DEFAULT_MAXSENDBUFFER = 1 * 1000;
87 
88 typedef int64_t NodeId;
89 
91 {
92  std::string strAddedNode;
94  bool fConnected;
95  bool fInbound;
96 };
97 
98 class CNodeStats;
99 class CClientUIInterface;
100 
102 {
103  CSerializedNetMsg() = default;
106  // No copying, only moves.
107  CSerializedNetMsg(const CSerializedNetMsg& msg) = delete;
109 
110  std::vector<unsigned char> data;
111  std::string m_type;
112 };
113 
121 enum class ConnectionType {
127  INBOUND,
128 
136 
137 
144  MANUAL,
145 
161  FEELER,
162 
172  BLOCK_RELAY,
173 
180  ADDR_FETCH,
181 };
182 
184 std::string ConnectionTypeAsString(ConnectionType conn_type);
185 void Discover();
186 uint16_t GetListenPort();
187 
188 enum
189 {
190  LOCAL_NONE, // unknown
191  LOCAL_IF, // address a local interface listens on
192  LOCAL_BIND, // address explicit bound to
193  LOCAL_MAPPED, // address reported by UPnP or NAT-PMP
194  LOCAL_MANUAL, // address explicitly specified (-externalip=)
195 
197 };
198 
199 bool IsPeerAddrLocalGood(CNode *pnode);
201 std::optional<CAddress> GetLocalAddrForPeer(CNode *pnode);
202 
207 void SetReachable(enum Network net, bool reachable);
209 bool IsReachable(enum Network net);
211 bool IsReachable(const CNetAddr& addr);
212 
213 bool AddLocal(const CService& addr, int nScore = LOCAL_NONE);
214 bool AddLocal(const CNetAddr& addr, int nScore = LOCAL_NONE);
215 void RemoveLocal(const CService& addr);
216 bool SeenLocal(const CService& addr);
217 bool IsLocal(const CService& addr);
218 bool GetLocal(CService &addr, const CNetAddr *paddrPeer = nullptr);
219 CAddress GetLocalAddress(const CNetAddr *paddrPeer, ServiceFlags nLocalServices);
220 
221 
222 extern bool fDiscover;
223 extern bool fListen;
224 
226 extern std::string strSubVersion;
227 
229  int nScore;
230  uint16_t nPort;
231 };
232 
234 extern std::map<CNetAddr, LocalServiceInfo> mapLocalHost GUARDED_BY(cs_mapLocalHost);
235 
236 extern const std::string NET_MESSAGE_COMMAND_OTHER;
237 typedef std::map<std::string, uint64_t> mapMsgCmdSize; //command, total bytes
238 
240 {
241 public:
245  int64_t nLastSend;
246  int64_t nLastRecv;
247  int64_t nLastTXTime;
248  int64_t nLastBlockTime;
249  int64_t nTimeConnected;
250  int64_t nTimeOffset;
251  std::string addrName;
252  int nVersion;
253  std::string cleanSubVer;
254  bool fInbound;
258  uint64_t nSendBytes;
260  uint64_t nRecvBytes;
263  std::chrono::microseconds m_last_ping_time;
264  std::chrono::microseconds m_min_ping_time;
266  // Our address, as reported by the peer
267  std::string addrLocal;
268  // Address of this peer
270  // Bind address of our side of the connection
272  // Network the peer connected through
274  uint32_t m_mapped_as;
276 };
277 
278 
283 class CNetMessage {
284 public:
286  std::chrono::microseconds m_time{0};
287  uint32_t m_message_size{0};
288  uint32_t m_raw_message_size{0};
289  std::string m_command;
290 
291  CNetMessage(CDataStream&& recv_in) : m_recv(std::move(recv_in)) {}
292 
293  void SetVersion(int nVersionIn)
294  {
295  m_recv.SetVersion(nVersionIn);
296  }
297 };
298 
304 public:
305  // returns true if the current deserialization is complete
306  virtual bool Complete() const = 0;
307  // set the serialization context version
308  virtual void SetVersion(int version) = 0;
310  virtual int Read(Span<const uint8_t>& msg_bytes) = 0;
311  // decomposes a message from the context
312  virtual std::optional<CNetMessage> GetMessage(std::chrono::microseconds time, uint32_t& out_err) = 0;
314 };
315 
317 {
318 private:
320  const NodeId m_node_id; // Only for logging
321  mutable CHash256 hasher;
323  bool in_data; // parsing header (false) or data (true)
324  CDataStream hdrbuf; // partially received header
325  CMessageHeader hdr; // complete header
326  CDataStream vRecv; // received message data
327  unsigned int nHdrPos;
328  unsigned int nDataPos;
329 
330  const uint256& GetMessageHash() const;
331  int readHeader(Span<const uint8_t> msg_bytes);
332  int readData(Span<const uint8_t> msg_bytes);
333 
334  void Reset() {
335  vRecv.clear();
336  hdrbuf.clear();
337  hdrbuf.resize(24);
338  in_data = false;
339  nHdrPos = 0;
340  nDataPos = 0;
341  data_hash.SetNull();
342  hasher.Reset();
343  }
344 
345 public:
346  V1TransportDeserializer(const CChainParams& chain_params, const NodeId node_id, int nTypeIn, int nVersionIn)
347  : m_chain_params(chain_params),
348  m_node_id(node_id),
349  hdrbuf(nTypeIn, nVersionIn),
350  vRecv(nTypeIn, nVersionIn)
351  {
352  Reset();
353  }
354 
355  bool Complete() const override
356  {
357  if (!in_data)
358  return false;
359  return (hdr.nMessageSize == nDataPos);
360  }
361  void SetVersion(int nVersionIn) override
362  {
363  hdrbuf.SetVersion(nVersionIn);
364  vRecv.SetVersion(nVersionIn);
365  }
366  int Read(Span<const uint8_t>& msg_bytes) override
367  {
368  int ret = in_data ? readData(msg_bytes) : readHeader(msg_bytes);
369  if (ret < 0) {
370  Reset();
371  } else {
372  msg_bytes = msg_bytes.subspan(ret);
373  }
374  return ret;
375  }
376  std::optional<CNetMessage> GetMessage(std::chrono::microseconds time, uint32_t& out_err_raw_size) override;
377 };
378 
382 public:
383  // prepare message for transport (header construction, error-correction computation, payload encryption, etc.)
384  virtual void prepareForTransport(CSerializedNetMsg& msg, std::vector<unsigned char>& header) = 0;
385  virtual ~TransportSerializer() {}
386 };
387 
389 public:
390  void prepareForTransport(CSerializedNetMsg& msg, std::vector<unsigned char>& header) override;
391 };
392 
394 class CNode
395 {
396  friend class CConnman;
397  friend struct ConnmanTestMsg;
398 
399 public:
400  std::unique_ptr<TransportDeserializer> m_deserializer;
401  std::unique_ptr<TransportSerializer> m_serializer;
402 
404  std::atomic<ServiceFlags> nServices{NODE_NONE};
405  SOCKET hSocket GUARDED_BY(cs_hSocket);
407  size_t nSendSize GUARDED_BY(cs_vSend){0};
409  size_t nSendOffset GUARDED_BY(cs_vSend){0};
410  uint64_t nSendBytes GUARDED_BY(cs_vSend){0};
411  std::deque<std::vector<unsigned char>> vSendMsg GUARDED_BY(cs_vSend);
415 
417  std::list<CNetMessage> vProcessMsg GUARDED_BY(cs_vProcessMsg);
418  size_t nProcessQueueSize{0};
419 
421 
422  uint64_t nRecvBytes GUARDED_BY(cs_vRecv){0};
423 
424  std::atomic<int64_t> nLastSend{0};
425  std::atomic<int64_t> nLastRecv{0};
427  const int64_t nTimeConnected;
428  std::atomic<int64_t> nTimeOffset{0};
429  // Address of this peer
430  const CAddress addr;
431  // Bind address of our side of the connection
434  const bool m_inbound_onion;
435  std::atomic<int> nVersion{0};
441  std::string cleanSubVer GUARDED_BY(cs_SubVer){};
442  bool m_prefer_evict{false}; // This peer is preferred for eviction.
443  bool HasPermission(NetPermissionFlags permission) const {
444  return NetPermissions::HasFlag(m_permissionFlags, permission);
445  }
446  bool fClient{false}; // set by version message
447  bool m_limited_node{false}; //after BIP159, set by version message
449  std::atomic_bool fSuccessfullyConnected{false};
450  // Setting fDisconnect to true will cause the node to be disconnected the
451  // next time DisconnectNodes() runs
452  std::atomic_bool fDisconnect{false};
454  std::atomic<int> nRefCount{0};
455 
456  const uint64_t nKeyedNetGroup;
457  std::atomic_bool fPauseRecv{false};
458  std::atomic_bool fPauseSend{false};
459 
461  switch (m_conn_type) {
464  return true;
469  return false;
470  } // no default case, so the compiler can warn about missing cases
471 
472  assert(false);
473  }
474 
475  bool IsFullOutboundConn() const {
477  }
478 
479  bool IsManualConn() const {
481  }
482 
483  bool IsBlockOnlyConn() const {
485  }
486 
487  bool IsFeelerConn() const {
489  }
490 
491  bool IsAddrFetchConn() const {
493  }
494 
495  bool IsInboundConn() const {
497  }
498 
499  bool ExpectServicesFromConn() const {
500  switch (m_conn_type) {
504  return false;
508  return true;
509  } // no default case, so the compiler can warn about missing cases
510 
511  assert(false);
512  }
513 
525 
526  // We selected peer as (compact blocks) high-bandwidth peer (BIP152)
527  std::atomic<bool> m_bip152_highbandwidth_to{false};
528  // Peer selected us as (compact blocks) high-bandwidth peer (BIP152)
529  std::atomic<bool> m_bip152_highbandwidth_from{false};
530 
531  struct TxRelay {
533  // We use fRelayTxes for two purposes -
534  // a) it allows us to not relay tx invs before receiving the peer's version message
535  // b) the peer may tell us in its version message that we should not relay tx invs
536  // unless it loads a bloom filter.
537  bool fRelayTxes GUARDED_BY(cs_filter){false};
538  std::unique_ptr<CBloomFilter> pfilter PT_GUARDED_BY(cs_filter) GUARDED_BY(cs_filter){nullptr};
539 
541  CRollingBloomFilter filterInventoryKnown GUARDED_BY(cs_tx_inventory){50000, 0.000001};
542  // Set of transaction ids we still have to announce.
543  // They are sorted by the mempool before relay, so the order is not important.
544  std::set<uint256> setInventoryTxToSend;
545  // Used for BIP35 mempool sending
546  bool fSendMempool GUARDED_BY(cs_tx_inventory){false};
547  // Last time a "MEMPOOL" request was serviced.
548  std::atomic<std::chrono::seconds> m_last_mempool_req{0s};
549  std::chrono::microseconds nNextInvSend{0};
550 
552  std::atomic<CAmount> minFeeFilter{0};
554  std::chrono::microseconds m_next_send_feefilter{0};
555  };
556 
557  // m_tx_relay == nullptr if we're not relaying transactions with this peer
558  std::unique_ptr<TxRelay> m_tx_relay;
559 
565  std::atomic<int64_t> nLastBlockTime{0};
566 
571  std::atomic<int64_t> nLastTXTime{0};
572 
574  std::atomic<std::chrono::microseconds> m_last_ping_time{0us};
575 
578  std::atomic<std::chrono::microseconds> m_min_ping_time{std::chrono::microseconds::max()};
579 
580  CNode(NodeId id, ServiceFlags nLocalServicesIn, SOCKET hSocketIn, const CAddress& addrIn, uint64_t nKeyedNetGroupIn, uint64_t nLocalHostNonceIn, const CAddress& addrBindIn, const std::string& addrNameIn, ConnectionType conn_type_in, bool inbound_onion);
581  ~CNode();
582  CNode(const CNode&) = delete;
583  CNode& operator=(const CNode&) = delete;
584 
585  NodeId GetId() const {
586  return id;
587  }
588 
589  uint64_t GetLocalNonce() const {
590  return nLocalHostNonce;
591  }
592 
593  int GetRefCount() const
594  {
595  assert(nRefCount >= 0);
596  return nRefCount;
597  }
598 
608  bool ReceiveMsgBytes(Span<const uint8_t> msg_bytes, bool& complete);
609 
610  void SetCommonVersion(int greatest_common_version)
611  {
613  m_greatest_common_version = greatest_common_version;
614  }
615  int GetCommonVersion() const
616  {
618  }
619 
620  CService GetAddrLocal() const;
622  void SetAddrLocal(const CService& addrLocalIn);
623 
625  {
626  nRefCount++;
627  return this;
628  }
629 
630  void Release()
631  {
632  nRefCount--;
633  }
634 
635  void AddKnownTx(const uint256& hash)
636  {
637  if (m_tx_relay != nullptr) {
638  LOCK(m_tx_relay->cs_tx_inventory);
639  m_tx_relay->filterInventoryKnown.insert(hash);
640  }
641  }
642 
643  void PushTxInventory(const uint256& hash)
644  {
645  if (m_tx_relay == nullptr) return;
646  LOCK(m_tx_relay->cs_tx_inventory);
647  if (!m_tx_relay->filterInventoryKnown.contains(hash)) {
648  m_tx_relay->setInventoryTxToSend.insert(hash);
649  }
650  }
651 
652  void CloseSocketDisconnect();
653 
654  void copyStats(CNodeStats &stats, const std::vector<bool> &m_asmap);
655 
657  {
658  return nLocalServices;
659  }
660 
661  std::string GetAddrName() const;
663  void MaybeSetAddrName(const std::string& addrNameIn);
664 
666 
668  void PongReceived(std::chrono::microseconds ping_time) {
669  m_last_ping_time = ping_time;
670  m_min_ping_time = std::min(m_min_ping_time.load(), ping_time);
671  }
672 
673 private:
674  const NodeId id;
675  const uint64_t nLocalHostNonce;
678 
695 
696  std::list<CNetMessage> vRecvMsg; // Used only by SocketHandler thread
697 
699  std::string addrName GUARDED_BY(cs_addrName);
700 
701  // Our address, as reported by the peer
702  CService addrLocal GUARDED_BY(cs_addrLocal);
704 
705  mapMsgCmdSize mapSendBytesPerMsgCmd GUARDED_BY(cs_vSend);
706  mapMsgCmdSize mapRecvBytesPerMsgCmd GUARDED_BY(cs_vRecv);
707 };
708 
713 {
714 public:
716  virtual void InitializeNode(CNode* pnode) = 0;
717 
719  virtual void FinalizeNode(const CNode& node) = 0;
720 
728  virtual bool ProcessMessages(CNode* pnode, std::atomic<bool>& interrupt) = 0;
729 
736  virtual bool SendMessages(CNode* pnode) EXCLUSIVE_LOCKS_REQUIRED(pnode->cs_sendProcessing) = 0;
737 
738 
739 protected:
744  ~NetEventsInterface() = default;
745 };
746 
747 class CConnman
748 {
749 public:
750 
751  struct Options
752  {
757  int nMaxAddnode = 0;
758  int nMaxFeeler = 0;
761  BanMan* m_banman = nullptr;
762  unsigned int nSendBufferMaxSize = 0;
763  unsigned int nReceiveFloodSize = 0;
764  uint64_t nMaxOutboundLimit = 0;
766  std::vector<std::string> vSeedNodes;
767  std::vector<NetWhitelistPermissions> vWhitelistedRange;
768  std::vector<NetWhitebindPermissions> vWhiteBinds;
769  std::vector<CService> vBinds;
770  std::vector<CService> onion_binds;
775  std::vector<std::string> m_specified_outgoing;
776  std::vector<std::string> m_added_nodes;
777  std::vector<bool> m_asmap;
779  };
780 
781  void Init(const Options& connOptions) {
782  nLocalServices = connOptions.nLocalServices;
783  nMaxConnections = connOptions.nMaxConnections;
784  m_max_outbound_full_relay = std::min(connOptions.m_max_outbound_full_relay, connOptions.nMaxConnections);
787  nMaxAddnode = connOptions.nMaxAddnode;
788  nMaxFeeler = connOptions.nMaxFeeler;
790  clientInterface = connOptions.uiInterface;
791  m_banman = connOptions.m_banman;
792  m_msgproc = connOptions.m_msgproc;
794  nReceiveFloodSize = connOptions.nReceiveFloodSize;
796  {
798  nMaxOutboundLimit = connOptions.nMaxOutboundLimit;
799  }
800  vWhitelistedRange = connOptions.vWhitelistedRange;
801  {
803  vAddedNodes = connOptions.m_added_nodes;
804  }
805  m_onion_binds = connOptions.onion_binds;
806  }
807 
808  CConnman(uint64_t seed0, uint64_t seed1, CAddrMan& addrman, bool network_active = true);
809  ~CConnman();
810  bool Start(CScheduler& scheduler, const Options& options);
811 
812  void StopThreads();
813  void StopNodes();
814  void Stop()
815  {
816  StopThreads();
817  StopNodes();
818  };
819 
820  void Interrupt();
821  bool GetNetworkActive() const { return fNetworkActive; };
823  void SetNetworkActive(bool active);
824  void OpenNetworkConnection(const CAddress& addrConnect, bool fCountFailure, CSemaphoreGrant* grantOutbound, const char* strDest, ConnectionType conn_type);
825  bool CheckIncomingNonce(uint64_t nonce);
826 
827  bool ForNode(NodeId id, std::function<bool(CNode* pnode)> func);
828 
829  void PushMessage(CNode* pnode, CSerializedNetMsg&& msg);
830 
831  using NodeFn = std::function<void(CNode*)>;
832  void ForEachNode(const NodeFn& func)
833  {
834  LOCK(cs_vNodes);
835  for (auto&& node : vNodes) {
837  func(node);
838  }
839  };
840 
841  void ForEachNode(const NodeFn& func) const
842  {
843  LOCK(cs_vNodes);
844  for (auto&& node : vNodes) {
846  func(node);
847  }
848  };
849 
850  // Addrman functions
858  std::vector<CAddress> GetAddresses(size_t max_addresses, size_t max_pct, std::optional<Network> network) const;
865  std::vector<CAddress> GetAddresses(CNode& requestor, size_t max_addresses, size_t max_pct);
866 
867  // This allows temporarily exceeding m_max_outbound_full_relay, with the goal of finding
868  // a peer that is better than all our current peers.
869  void SetTryNewOutboundPeer(bool flag);
870  bool GetTryNewOutboundPeer() const;
871 
873  LogPrint(BCLog::NET, "net: enabling extra block-relay-only peers\n");
875  }
876 
877  // Return the number of outbound peers we have in excess of our target (eg,
878  // if we previously called SetTryNewOutboundPeer(true), and have since set
879  // to false, we may have extra peers that we wish to disconnect). This may
880  // return a value less than (num_outbound_connections - num_outbound_slots)
881  // in cases where some outbound connections are not yet fully connected, or
882  // not yet fully disconnected.
883  int GetExtraFullOutboundCount() const;
884  // Count the number of block-relay-only peers we have over our limit.
885  int GetExtraBlockRelayCount() const;
886 
887  bool AddNode(const std::string& node);
888  bool RemoveAddedNode(const std::string& node);
889  std::vector<AddedNodeInfo> GetAddedNodeInfo() const;
890 
903  bool AddConnection(const std::string& address, ConnectionType conn_type);
904 
905  size_t GetNodeCount(ConnectionDirection) const;
906  void GetNodeStats(std::vector<CNodeStats>& vstats) const;
907  bool DisconnectNode(const std::string& node);
908  bool DisconnectNode(const CSubNet& subnet);
909  bool DisconnectNode(const CNetAddr& addr);
910  bool DisconnectNode(NodeId id);
911 
919 
920  uint64_t GetMaxOutboundTarget() const;
921  std::chrono::seconds GetMaxOutboundTimeframe() const;
922 
926  bool OutboundTargetReached(bool historicalBlockServingLimit) const;
927 
930  uint64_t GetOutboundTargetBytesLeft() const;
931 
934  std::chrono::seconds GetMaxOutboundTimeLeftInCycle() const;
935 
936  uint64_t GetTotalBytesRecv() const;
937  uint64_t GetTotalBytesSent() const;
938 
940  CSipHasher GetDeterministicRandomizer(uint64_t id) const;
941 
942  unsigned int GetReceiveFloodSize() const;
943 
944  void WakeMessageHandler();
945 
950  std::chrono::microseconds PoissonNextSendInbound(std::chrono::microseconds now, std::chrono::seconds average_interval);
951 
952  void SetAsmap(std::vector<bool> asmap) { addrman.m_asmap = std::move(asmap); }
953 
955  bool ShouldRunInactivityChecks(const CNode& node, std::optional<int64_t> now=std::nullopt) const;
956 
957 private:
958  struct ListenSocket {
959  public:
962  ListenSocket(SOCKET socket_, NetPermissionFlags permissions_) : socket(socket_), m_permissions(permissions_) {}
963  private:
965  };
966 
967  bool BindListenPort(const CService& bindAddr, bilingual_str& strError, NetPermissionFlags permissions);
968  bool Bind(const CService& addr, unsigned int flags, NetPermissionFlags permissions);
969  bool InitBinds(const Options& options);
970 
972  void AddAddrFetch(const std::string& strDest);
973  void ProcessAddrFetch();
974  void ThreadOpenConnections(std::vector<std::string> connect);
975  void ThreadMessageHandler();
977  void AcceptConnection(const ListenSocket& hListenSocket);
978 
988  NetPermissionFlags permissionFlags,
989  const CAddress& addr_bind,
990  const CAddress& addr);
991 
992  void DisconnectNodes();
995  bool InactivityCheck(const CNode& node) const;
996  bool GenerateSelectSet(std::set<SOCKET> &recv_set, std::set<SOCKET> &send_set, std::set<SOCKET> &error_set);
997  void SocketEvents(std::set<SOCKET> &recv_set, std::set<SOCKET> &send_set, std::set<SOCKET> &error_set);
998  void SocketHandler();
999  void ThreadSocketHandler();
1000  void ThreadDNSAddressSeed();
1001 
1002  uint64_t CalculateKeyedNetGroup(const CAddress& ad) const;
1003 
1004  CNode* FindNode(const CNetAddr& ip);
1005  CNode* FindNode(const CSubNet& subNet);
1006  CNode* FindNode(const std::string& addrName);
1007  CNode* FindNode(const CService& addr);
1008 
1013  bool AlreadyConnectedToAddress(const CAddress& addr);
1014 
1015  bool AttemptToEvictConnection();
1016  CNode* ConnectNode(CAddress addrConnect, const char *pszDest, bool fCountFailure, ConnectionType conn_type);
1018 
1019  void DeleteNode(CNode* pnode);
1020 
1021  NodeId GetNewNodeId();
1022 
1023  size_t SocketSendData(CNode& node) const EXCLUSIVE_LOCKS_REQUIRED(node.cs_vSend);
1024  void DumpAddresses();
1025 
1026  // Network stats
1027  void RecordBytesRecv(uint64_t bytes);
1028  void RecordBytesSent(uint64_t bytes);
1029 
1033  std::vector<CAddress> GetCurrentBlockRelayOnlyConns() const;
1034 
1035  // Whether the node should be passed out in ForEach* callbacks
1036  static bool NodeFullyConnected(const CNode* pnode);
1037 
1038  // Network usage totals
1041  uint64_t nTotalBytesRecv GUARDED_BY(cs_totalBytesRecv) {0};
1042  uint64_t nTotalBytesSent GUARDED_BY(cs_totalBytesSent) {0};
1043 
1044  // outbound limit & stats
1045  uint64_t nMaxOutboundTotalBytesSentInCycle GUARDED_BY(cs_totalBytesSent) {0};
1046  std::chrono::seconds nMaxOutboundCycleStartTime GUARDED_BY(cs_totalBytesSent) {0};
1047  uint64_t nMaxOutboundLimit GUARDED_BY(cs_totalBytesSent);
1048 
1049  // P2P timeout in seconds
1051 
1052  // Whitelisted ranges. Any node connecting from these is automatically
1053  // whitelisted (as well as those connecting to whitelisted binds).
1054  std::vector<NetWhitelistPermissions> vWhitelistedRange;
1055 
1056  unsigned int nSendBufferMaxSize{0};
1057  unsigned int nReceiveFloodSize{0};
1058 
1059  std::vector<ListenSocket> vhListenSocket;
1060  std::atomic<bool> fNetworkActive{true};
1063  std::deque<std::string> m_addr_fetches GUARDED_BY(m_addr_fetches_mutex);
1065  std::vector<std::string> vAddedNodes GUARDED_BY(cs_vAddedNodes);
1067  std::vector<CNode*> vNodes GUARDED_BY(cs_vNodes);
1068  std::list<CNode*> vNodesDisconnected;
1070  std::atomic<NodeId> nLastNodeId{0};
1071  unsigned int nPrevNodeCount{0};
1072 
1080  std::vector<CAddress> m_addrs_response_cache;
1081  std::chrono::microseconds m_cache_entry_expiration{0};
1082  };
1083 
1098  std::map<uint64_t, CachedAddrResponse> m_addr_response_caches;
1099 
1113 
1114  std::unique_ptr<CSemaphore> semOutbound;
1115  std::unique_ptr<CSemaphore> semAddnode;
1117 
1118  // How many full-relay (tx, block, addr) outbound peers we want
1120 
1121  // How many block-relay only outbound peers we want
1122  // We do not relay tx or addr messages with these peers
1124 
1133 
1138  std::vector<CAddress> m_anchors;
1139 
1141  const uint64_t nSeed0, nSeed1;
1142 
1144  bool fMsgProcWake GUARDED_BY(mutexMsgProc);
1145 
1146  std::condition_variable condMsgProc;
1148  std::atomic<bool> flagInterruptMsgProc{false};
1149 
1157 
1162  std::unique_ptr<i2p::sam::Session> m_i2p_sam_session;
1163 
1165  std::thread threadSocketHandler;
1170 
1175 
1180  std::atomic_bool m_start_extra_block_relay_peers{false};
1181 
1182  std::atomic<std::chrono::microseconds> m_next_send_inv_to_incoming{0us};
1183 
1188  std::vector<CService> m_onion_binds;
1189 
1190  friend struct CConnmanTest;
1191  friend struct ConnmanTestMsg;
1192 };
1193 
1195 std::chrono::microseconds PoissonNextSend(std::chrono::microseconds now, std::chrono::seconds average_interval);
1196 
1198 void CaptureMessage(const CAddress& addr, const std::string& msg_type, const Span<const unsigned char>& data, bool is_incoming);
1199 
1201 {
1204  std::chrono::microseconds m_min_ping_time;
1206  int64_t nLastTXTime;
1210  uint64_t nKeyedNetGroup;
1214 };
1215 
1223 [[nodiscard]] std::optional<NodeId> SelectNodeToEvict(std::vector<NodeEvictionCandidate>&& vEvictionCandidates);
1224 
1246 void ProtectEvictionCandidatesByRatio(std::vector<NodeEvictionCandidate>& vEvictionCandidates);
1247 
1248 #endif // BITCOIN_NET_H
NodeEvictionCandidate::m_network
Network m_network
Definition: net.h:1213
V1TransportSerializer
Definition: net.h:388
CNodeStats::addrName
std::string addrName
Definition: net.h:251
CConnman::SetTryNewOutboundPeer
void SetTryNewOutboundPeer(bool flag)
Definition: net.cpp:1793
NodeId
int64_t NodeId
Definition: net.h:88
CConnman::cs_totalBytesRecv
RecursiveMutex cs_totalBytesRecv
Definition: net.h:1039
CConnman::DisconnectNode
bool DisconnectNode(const std::string &node)
Definition: net.cpp:2837
CService
A combination of a network address (CNetAddr) and a (TCP) port.
Definition: netaddress.h:539
threadinterrupt.h
CNodeStats::m_last_ping_time
std::chrono::microseconds m_last_ping_time
Definition: net.h:263
CNode::IsOutboundOrBlockRelayConn
bool IsOutboundOrBlockRelayConn() const
Definition: net.h:460
CConnman::m_max_outbound
int m_max_outbound
Definition: net.h:1127
CConnman::m_anchors
std::vector< CAddress > m_anchors
Addresses that were saved during the previous clean shutdown.
Definition: net.h:1138
feerate.h
CConnman::ConnectNode
CNode * ConnectNode(CAddress addrConnect, const char *pszDest, bool fCountFailure, ConnectionType conn_type)
Definition: net.cpp:383
CScheduler
Simple class for background tasks that should be run periodically or once "after a while".
Definition: scheduler.h:33
CConnman::Options::vSeedNodes
std::vector< std::string > vSeedNodes
Definition: net.h:766
CConnman::vhListenSocket
std::vector< ListenSocket > vhListenSocket
Definition: net.h:1059
V1TransportDeserializer::Complete
bool Complete() const override
Definition: net.h:355
CNodeStats::fInbound
bool fInbound
Definition: net.h:254
TransportDeserializer::GetMessage
virtual std::optional< CNetMessage > GetMessage(std::chrono::microseconds time, uint32_t &out_err)=0
CNode::GUARDED_BY
size_t nSendSize GUARDED_BY(cs_vSend)
Total size of all vSendMsg entries.
Definition: net.h:407
CConnman::ThreadMessageHandler
void ThreadMessageHandler()
Definition: net.cpp:2235
CNode::IsFeelerConn
bool IsFeelerConn() const
Definition: net.h:487
CNode::GetRefCount
int GetRefCount() const
Definition: net.h:593
TransportDeserializer
The TransportDeserializer takes care of holding and deserializing the network receive buffer.
Definition: net.h:303
NetEventsInterface
Interface for message handling.
Definition: net.h:712
CConnman::GUARDED_BY
uint64_t nTotalBytesRecv GUARDED_BY(cs_totalBytesRecv)
Definition: net.h:1041
CConnman::Options::nMaxAddnode
int nMaxAddnode
Definition: net.h:757
NodeEvictionCandidate::m_min_ping_time
std::chrono::microseconds m_min_ping_time
Definition: net.h:1204
check.h
CNodeStats::m_network
Network m_network
Definition: net.h:273
CConnman::nSendBufferMaxSize
unsigned int nSendBufferMaxSize
Definition: net.h:1056
NetPermissionFlags::None
@ None
CConnman::AttemptToEvictConnection
bool AttemptToEvictConnection()
Try to find a connection to evict when the node is full.
Definition: net.cpp:1049
CNode::nLastSend
std::atomic< int64_t > nLastSend
Definition: net.h:424
CNode::cs_vSend
Mutex cs_vSend
Definition: net.h:412
CNodeStats::addrLocal
std::string addrLocal
Definition: net.h:267
CConnman::Interrupt
void Interrupt()
Definition: net.cpp:2639
CClientUIInterface
Signals for UI communication.
Definition: ui_interface.h:24
CNode::GetId
NodeId GetId() const
Definition: net.h:585
CConnman::condMsgProc
std::condition_variable condMsgProc
Definition: net.h:1146
CConnman::nReceiveFloodSize
unsigned int nReceiveFloodSize
Definition: net.h:1057
CNode::GUARDED_BY
size_t nSendOffset GUARDED_BY(cs_vSend)
Offset inside the first vSendMsg already sent.
Definition: net.h:409
NodeEvictionCandidate::fBloomFilter
bool fBloomFilter
Definition: net.h:1209
CNodeStats::nodeid
NodeId nodeid
Definition: net.h:242
CMessageHeader::nMessageSize
uint32_t nMessageSize
Definition: protocol.h:56
CNode::PongReceived
void PongReceived(std::chrono::microseconds ping_time)
A ping-pong round trip has completed successfully.
Definition: net.h:668
flags
int flags
Definition: bitcoin-tx.cpp:512
CConnman::ThreadDNSAddressSeed
void ThreadDNSAddressSeed()
Definition: net.cpp:1650
CNodeStats::nVersion
int nVersion
Definition: net.h:252
streams.h
CHash256::Reset
CHash256 & Reset()
Definition: hash.h:42
CConnman::Options::vBinds
std::vector< CService > vBinds
Definition: net.h:769
CSerializedNetMsg::data
std::vector< unsigned char > data
Definition: net.h:110
CNode::copyStats
void copyStats(CNodeStats &stats, const std::vector< bool > &m_asmap)
Definition: net.cpp:570
CConnman::CreateNodeFromAcceptedSocket
void CreateNodeFromAcceptedSocket(SOCKET hSocket, NetPermissionFlags permissionFlags, const CAddress &addr_bind, const CAddress &addr)
Create a CNode object from a socket that has just been accepted and add the node to the vNodes member...
Definition: net.cpp:1119
CNode::nRefCount
std::atomic< int > nRefCount
Definition: net.h:454
CConnman::StartExtraBlockRelayPeers
void StartExtraBlockRelayPeers()
Definition: net.h:872
CConnman::RecordBytesRecv
void RecordBytesRecv(uint64_t bytes)
Definition: net.cpp:2880
CNode::Release
void Release()
Definition: net.h:630
CConnman::GetMaxOutboundTimeframe
std::chrono::seconds GetMaxOutboundTimeframe() const
Definition: net.cpp:2909
CConnman::WakeMessageHandler
void WakeMessageHandler()
Definition: net.cpp:1641
CNode::m_bip152_highbandwidth_from
std::atomic< bool > m_bip152_highbandwidth_from
Definition: net.h:529
CConnman::Bind
bool Bind(const CService &addr, unsigned int flags, NetPermissionFlags permissions)
Definition: net.cpp:2470
CConnman::Options::m_i2p_accept_incoming
bool m_i2p_accept_incoming
Definition: net.h:778
CNode::nProcessQueueSize
size_t nProcessQueueSize
Definition: net.h:418
sync.h
CConnman::SocketEvents
void SocketEvents(std::set< SOCKET > &recv_set, std::set< SOCKET > &send_set, std::set< SOCKET > &error_set)
Definition: net.cpp:1438
CConnman::m_max_outbound_full_relay
int m_max_outbound_full_relay
Definition: net.h:1119
Discover
void Discover()
Definition: net.cpp:2390
CConnman::Options::nMaxOutboundLimit
uint64_t nMaxOutboundLimit
Definition: net.h:764
CNode::nLocalServices
const ServiceFlags nLocalServices
Services offered to this peer.
Definition: net.h:694
CNode::nLastRecv
std::atomic< int64_t > nLastRecv
Definition: net.h:425
CConnman::m_onion_binds
std::vector< CService > m_onion_binds
A vector of -bind=<address>:<port>=onion arguments each of which is an address and port that are desi...
Definition: net.h:1188
CNodeStats::mapRecvBytesPerMsgCmd
mapMsgCmdSize mapRecvBytesPerMsgCmd
Definition: net.h:261
CNode::m_limited_node
bool m_limited_node
Definition: net.h:447
bilingual_str
Bilingual messages:
Definition: translation.h:16
CNetAddr
Network address.
Definition: netaddress.h:118
CConnman::OutboundTargetReached
bool OutboundTargetReached(bool historicalBlockServingLimit) const
check if the outbound target is reached if param historicalBlockServingLimit is set true,...
Definition: net.cpp:2928
CConnman::ProcessAddrFetch
void ProcessAddrFetch()
Definition: net.cpp:1771
uint256.h
NodeEvictionCandidate::fRelayTxes
bool fRelayTxes
Definition: net.h:1208
DEFAULT_MAX_PEER_CONNECTIONS
static const unsigned int DEFAULT_MAX_PEER_CONNECTIONS
The maximum number of peer connections to maintain.
Definition: net.h:72
AddLocal
bool AddLocal(const CService &addr, int nScore=LOCAL_NONE)
Definition: net.cpp:231
ConnectionType::OUTBOUND_FULL_RELAY
@ OUTBOUND_FULL_RELAY
These are the default connections that we use to connect with the network.
CNode
Information about a peer.
Definition: net.h:394
CConnman::Options::bind_on_any
bool bind_on_any
True if the user did not specify -bind= or -whitebind= and thus we should bind on 0....
Definition: net.h:773
CNode::GUARDED_BY
SOCKET hSocket GUARDED_BY(cs_hSocket)
DEFAULT_MAXRECEIVEBUFFER
static const size_t DEFAULT_MAXRECEIVEBUFFER
Definition: net.h:85
ProtectEvictionCandidatesByRatio
void ProtectEvictionCandidatesByRatio(std::vector< NodeEvictionCandidate > &vEvictionCandidates)
Protect desirable or disadvantaged inbound peers from eviction by ratio.
Definition: net.cpp:908
CConnman::Options::nLocalServices
ServiceFlags nLocalServices
Definition: net.h:753
CConnman::cs_vAddedNodes
RecursiveMutex cs_vAddedNodes
Definition: net.h:1066
CChainParams
CChainParams defines various tweakable parameters of a given instance of the Bitcoin system.
Definition: chainparams.h:69
base_blob::SetNull
void SetNull()
Definition: uint256.h:39
CConnman::AddConnection
bool AddConnection(const std::string &address, ConnectionType conn_type)
Attempts to open a connection.
Definition: net.cpp:1214
CNode::m_serializer
std::unique_ptr< TransportSerializer > m_serializer
Definition: net.h:401
CNetMessage::m_command
std::string m_command
Definition: net.h:289
CConnman::AcceptConnection
void AcceptConnection(const ListenSocket &hListenSocket)
Definition: net.cpp:1093
CNode::GetAddrName
std::string GetAddrName() const
Definition: net.cpp:537
CConnman::Options::m_added_nodes
std::vector< std::string > m_added_nodes
Definition: net.h:776
CConnman::GetLocalServices
ServiceFlags GetLocalServices() const
Used to convey which local services we are offering peers during node connection.
Definition: net.cpp:2969
CConnman::m_addr_fetches_mutex
RecursiveMutex m_addr_fetches_mutex
Definition: net.h:1064
NetPermissions::HasFlag
static bool HasFlag(NetPermissionFlags flags, NetPermissionFlags f)
Definition: net_permissions.h:53
AnnotatedMixin< std::recursive_mutex >
CConnman::cs_totalBytesSent
RecursiveMutex cs_totalBytesSent
Definition: net.h:1040
CSerializedNetMsg::m_type
std::string m_type
Definition: net.h:111
CConnman::CConnman
CConnman(uint64_t seed0, uint64_t seed1, CAddrMan &addrman, bool network_active=true)
Definition: net.cpp:2454
CNodeStats::mapSendBytesPerMsgCmd
mapMsgCmdSize mapSendBytesPerMsgCmd
Definition: net.h:259
CNode::PushTxInventory
void PushTxInventory(const uint256 &hash)
Definition: net.h:643
ServiceFlags
ServiceFlags
nServices flags
Definition: protocol.h:271
CConnman::CachedAddrResponse::m_addrs_response_cache
std::vector< CAddress > m_addrs_response_cache
Definition: net.h:1080
CNode::ExpectServicesFromConn
bool ExpectServicesFromConn() const
Definition: net.h:499
PoissonNextSend
std::chrono::microseconds PoissonNextSend(std::chrono::microseconds now, std::chrono::seconds average_interval)
Return a timestamp in the future (in microseconds) for exponentially distributed events.
Definition: net.cpp:3083
V1TransportDeserializer::vRecv
CDataStream vRecv
Definition: net.h:326
CConnman::ListenSocket::socket
SOCKET socket
Definition: net.h:960
CNode::m_permissionFlags
NetPermissionFlags m_permissionFlags
Definition: net.h:403
CNodeStats::nLastBlockTime
int64_t nLastBlockTime
Definition: net.h:248
CNode::nTimeOffset
std::atomic< int64_t > nTimeOffset
Definition: net.h:428
CNode::nServices
std::atomic< ServiceFlags > nServices
Definition: net.h:404
CNodeStats::nLastRecv
int64_t nLastRecv
Definition: net.h:246
chainparams.h
CConnman::PoissonNextSendInbound
std::chrono::microseconds PoissonNextSendInbound(std::chrono::microseconds now, std::chrono::seconds average_interval)
Attempts to obfuscate tx time through exponentially distributed emitting.
Definition: net.cpp:3072
CNode::TxRelay::cs_filter
RecursiveMutex cs_filter
Definition: net.h:532
CConnman::Start
bool Start(CScheduler &scheduler, const Options &options)
Definition: net.cpp:2511
CConnman::CalculateKeyedNetGroup
uint64_t CalculateKeyedNetGroup(const CAddress &ad) const
Definition: net.cpp:3094
CNodeStats::addrBind
CAddress addrBind
Definition: net.h:271
V1TransportDeserializer::readData
int readData(Span< const uint8_t > msg_bytes)
Definition: net.cpp:711
Network
Network
A network type.
Definition: netaddress.h:45
CNodeStats::addr
CAddress addr
Definition: net.h:269
CConnman::GetTryNewOutboundPeer
bool GetTryNewOutboundPeer() const
Definition: net.cpp:1788
CConnman::StopThreads
void StopThreads()
Definition: net.cpp:2663
DEFAULT_FORCEDNSSEED
static constexpr bool DEFAULT_FORCEDNSSEED
Definition: net.h:82
CConnman::NotifyNumConnectionsChanged
void NotifyNumConnectionsChanged()
Definition: net.cpp:1298
LOCAL_MAX
@ LOCAL_MAX
Definition: net.h:196
CNode::fDisconnect
std::atomic_bool fDisconnect
Definition: net.h:452
V1TransportDeserializer::data_hash
uint256 data_hash
Definition: net.h:322
CSipHasher
SipHash-2-4.
Definition: siphash.h:13
CConnman::GetMaxOutboundTimeLeftInCycle
std::chrono::seconds GetMaxOutboundTimeLeftInCycle() const
returns the time left in the current max outbound cycle in case of no limit, it will always return 0
Definition: net.cpp:2914
NetPermissionFlags
NetPermissionFlags
Definition: net_permissions.h:18
CConnman::nPrevNodeCount
unsigned int nPrevNodeCount
Definition: net.h:1071
AddedNodeInfo::fConnected
bool fConnected
Definition: net.h:94
ConnectionType::MANUAL
@ MANUAL
We open manual connections to addresses that users explicitly requested via the addnode RPC or the -a...
CNodeStats::m_min_ping_time
std::chrono::microseconds m_min_ping_time
Definition: net.h:264
CConnman::AddAddrFetch
void AddAddrFetch(const std::string &strDest)
Definition: net.cpp:116
CConnman::InactivityCheck
bool InactivityCheck(const CNode &node) const
Return true if the peer is inactive and should be disconnected.
Definition: net.cpp:1318
CNode::TxRelay::cs_tx_inventory
RecursiveMutex cs_tx_inventory
Definition: net.h:538
CConnman::GUARDED_BY
uint64_t nMaxOutboundTotalBytesSentInCycle GUARDED_BY(cs_totalBytesSent)
Definition: net.h:1045
CNode::addr
const CAddress addr
Definition: net.h:430
CConnman::GetNodeStats
void GetNodeStats(std::vector< CNodeStats > &vstats) const
Definition: net.cpp:2826
CConnman::OpenNetworkConnection
void OpenNetworkConnection(const CAddress &addrConnect, bool fCountFailure, CSemaphoreGrant *grantOutbound, const char *strDest, ConnectionType conn_type)
Definition: net.cpp:2200
ConnmanTestMsg
Definition: net.h:18
NodeEvictionCandidate::nKeyedNetGroup
uint64_t nKeyedNetGroup
Definition: net.h:1210
CNode::SetCommonVersion
void SetCommonVersion(int greatest_common_version)
Definition: net.h:610
CNode::GetLocalServices
ServiceFlags GetLocalServices() const
Definition: net.h:656
CNodeStats::m_starting_height
int m_starting_height
Definition: net.h:257
bloom.h
Span
A Span is an object that can refer to a contiguous sequence of objects.
Definition: span.h:92
CNode::nTimeConnected
const int64_t nTimeConnected
Unix epoch time at peer connection, in seconds.
Definition: net.h:427
Assume
#define Assume(val)
Assume is the identity function.
Definition: check.h:72
CConnman::FindNode
CNode * FindNode(const CNetAddr &ip)
Definition: net.cpp:308
NetEventsInterface::InitializeNode
virtual void InitializeNode(CNode *pnode)=0
Initialize a peer (setup state, queue any initial messages)
ConnectionType::INBOUND
@ INBOUND
Inbound connections are those initiated by a peer.
addrdb.h
V1TransportDeserializer::hdr
CMessageHeader hdr
Definition: net.h:325
CConnman::m_addr_response_caches
std::map< uint64_t, CachedAddrResponse > m_addr_response_caches
Addr responses stored in different caches per (network, local socket) prevent cross-network node iden...
Definition: net.h:1098
siphash.h
CSemaphoreGrant
RAII-style semaphore lock.
Definition: sync.h:315
protocol.h
MAX_OUTBOUND_FULL_RELAY_CONNECTIONS
static const int MAX_OUTBOUND_FULL_RELAY_CONNECTIONS
Maximum number of automatic outgoing nodes over which we'll relay everything (blocks,...
Definition: net.h:62
CNodeStats::nTimeConnected
int64_t nTimeConnected
Definition: net.h:249
random.h
CConnman::nMaxFeeler
int nMaxFeeler
Definition: net.h:1126
CNode::m_deserializer
std::unique_ptr< TransportDeserializer > m_deserializer
Definition: net.h:400
LOCAL_MAPPED
@ LOCAL_MAPPED
Definition: net.h:193
CConnman::mutexMsgProc
Mutex mutexMsgProc
Definition: net.h:1147
CNodeStats::m_mapped_as
uint32_t m_mapped_as
Definition: net.h:274
SeenLocal
bool SeenLocal(const CService &addr)
vote for a local address
Definition: net.cpp:289
TransportSerializer::~TransportSerializer
virtual ~TransportSerializer()
Definition: net.h:385
CConnman::nLocalServices
ServiceFlags nLocalServices
Services this instance offers.
Definition: net.h:1112
CConnman::ThreadSocketHandler
void ThreadSocketHandler()
Definition: net.cpp:1631
CConnman::ThreadOpenAddedConnections
void ThreadOpenAddedConnections()
Definition: net.cpp:2172
CNode::AddKnownTx
void AddKnownTx(const uint256 &hash)
Definition: net.h:635
V1TransportDeserializer::in_data
bool in_data
Definition: net.h:323
DEFAULT_MAXSENDBUFFER
static const size_t DEFAULT_MAXSENDBUFFER
Definition: net.h:86
NodeEvictionCandidate
Definition: net.h:1200
LOCAL_MANUAL
@ LOCAL_MANUAL
Definition: net.h:194
CNode::ConnectedThroughNetwork
Network ConnectedThroughNetwork() const
Get network the peer connected through.
Definition: net.cpp:563
CNode::TxRelay::m_last_mempool_req
std::atomic< std::chrono::seconds > m_last_mempool_req
Definition: net.h:548
CNodeStats::m_permissionFlags
NetPermissionFlags m_permissionFlags
Definition: net.h:262
CNode::cs_vRecv
Mutex cs_vRecv
Definition: net.h:414
CConnman::DumpAddresses
void DumpAddresses()
Definition: net.cpp:1760
CNode::TxRelay
Definition: net.h:531
CConnman::vWhitelistedRange
std::vector< NetWhitelistPermissions > vWhitelistedRange
Definition: net.h:1054
ip
static CService ip(uint32_t i)
Definition: denialofservice_tests.cpp:30
CConnman::m_start_extra_block_relay_peers
std::atomic_bool m_start_extra_block_relay_peers
flag for initiating extra block-relay-only peer connections.
Definition: net.h:1180
CConnman::Options::vWhitelistedRange
std::vector< NetWhitelistPermissions > vWhitelistedRange
Definition: net.h:767
AddedNodeInfo::strAddedNode
std::string strAddedNode
Definition: net.h:92
CNode::GetCommonVersion
int GetCommonVersion() const
Definition: net.h:615
NodeEvictionCandidate::id
NodeId id
Definition: net.h:1202
CNode::AddRef
CNode * AddRef()
Definition: net.h:624
CConnman::SocketSendData
size_t SocketSendData(CNode &node) const EXCLUSIVE_LOCKS_REQUIRED(node.cs_vSend)
Definition: net.cpp:786
CConnman::SetAsmap
void SetAsmap(std::vector< bool > asmap)
Definition: net.h:952
CConnman::m_banman
BanMan * m_banman
Pointer to this node's banman.
Definition: net.h:1132
compat.h
CConnman::AlreadyConnectedToAddress
bool AlreadyConnectedToAddress(const CAddress &addr)
Determine whether we're already connected to a given address, in order to avoid initiating duplicate ...
Definition: net.cpp:352
NetEventsInterface::SendMessages
virtual bool SendMessages(CNode *pnode) EXCLUSIVE_LOCKS_REQUIRED(pnode -> cs_sendProcessing)=0
Send queued protocol messages to a given node.
CNode::TxRelay::m_next_send_feefilter
std::chrono::microseconds m_next_send_feefilter
Definition: net.h:554
CNodeStats::fRelayTxes
bool fRelayTxes
Definition: net.h:244
CConnman::threadOpenConnections
std::thread threadOpenConnections
Definition: net.h:1167
CNode::m_tx_relay
std::unique_ptr< TxRelay > m_tx_relay
Definition: net.h:558
MAX_PROTOCOL_MESSAGE_LENGTH
static const unsigned int MAX_PROTOCOL_MESSAGE_LENGTH
Maximum length of incoming protocol messages (no message over 4 MB is currently acceptable).
Definition: net.h:58
span.h
netaddress.h
CNode::m_conn_type
const ConnectionType m_conn_type
Definition: net.h:676
SelectNodeToEvict
std::optional< NodeId > SelectNodeToEvict(std::vector< NodeEvictionCandidate > &&vEvictionCandidates)
Select an inbound peer to evict after filtering out (protecting) peers having distinct,...
Definition: net.cpp:981
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bool ForNode(NodeId id, std::function< bool(CNode *pnode)> func)
Definition: net.cpp:3059
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CAmount lastSentFeeFilter
Definition: net.h:553
SetReachable
void SetReachable(enum Network net, bool reachable)
Mark a network as reachable or unreachable (no automatic connects to it)
Definition: net.cpp:269
CNetMessage::m_time
std::chrono::microseconds m_time
time of message receipt
Definition: net.h:286
AddedNodeInfo::fInbound
bool fInbound
Definition: net.h:95
CSerializedNetMsg
Definition: net.h:101
CNode::GUARDED_BY
uint64_t nRecvBytes GUARDED_BY(cs_vRecv)
Definition: net.h:422
CNode::fSuccessfullyConnected
std::atomic_bool fSuccessfullyConnected
fSuccessfullyConnected is set to true on receiving VERACK from the peer.
Definition: net.h:449
CConnman::Options::onion_binds
std::vector< CService > onion_binds
Definition: net.h:770
CConnman::CachedAddrResponse
Cache responses to addr requests to minimize privacy leak.
Definition: net.h:1079
CConnman::GetNewNodeId
NodeId GetNewNodeId()
Definition: net.cpp:2464
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uint16_t GetListenPort()
Definition: net.cpp:122
CConnman::fAddressesInitialized
bool fAddressesInitialized
Definition: net.h:1061
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Definition: net.h:958
V1TransportDeserializer::V1TransportDeserializer
V1TransportDeserializer(const CChainParams &chain_params, const NodeId node_id, int nTypeIn, int nVersionIn)
Definition: net.h:346
AddedNodeInfo
Definition: net.h:90
CConnman::Options::m_peer_connect_timeout
int64_t m_peer_connect_timeout
Definition: net.h:765
CAmount
int64_t CAmount
Amount in satoshis (Can be negative)
Definition: amount.h:12
CConnman::addrman
CAddrMan & addrman
Definition: net.h:1062
CNode::TxRelay::setInventoryTxToSend
std::set< uint256 > setInventoryTxToSend
Definition: net.h:541
CNodeStats::minFeeFilter
CAmount minFeeFilter
Definition: net.h:265
CNode::m_bip152_highbandwidth_to
std::atomic< bool > m_bip152_highbandwidth_to
Definition: net.h:527
TransportDeserializer::~TransportDeserializer
virtual ~TransportDeserializer()
Definition: net.h:313
CConnman::Options::m_use_addrman_outgoing
bool m_use_addrman_outgoing
Definition: net.h:774
CConnman::GetTotalBytesRecv
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Definition: net.cpp:2957
TransportDeserializer::Read
virtual int Read(Span< const uint8_t > &msg_bytes)=0
read and deserialize data, advances msg_bytes data pointer
DEFAULT_FIXEDSEEDS
static constexpr bool DEFAULT_FIXEDSEEDS
Definition: net.h:84
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int m_max_outbound_block_relay
Definition: net.h:756
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Definition: netaddress.h:486
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void AddSocketPermissionFlags(NetPermissionFlags &flags) const
Definition: net.h:961
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CHash256 hasher
Definition: net.h:321
CNode::IsAddrFetchConn
bool IsAddrFetchConn() const
Definition: net.h:491
CConnman::InitBinds
bool InitBinds(const Options &options)
Definition: net.cpp:2489
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int64_t m_peer_connect_timeout
Definition: net.h:1050
CNode::cs_vProcessMsg
RecursiveMutex cs_vProcessMsg
Definition: net.h:416
CNode::cs_hSocket
Mutex cs_hSocket
Definition: net.h:413
CNodeStats::cleanSubVer
std::string cleanSubVer
Definition: net.h:253
CConnman::vNodesDisconnected
std::list< CNode * > vNodesDisconnected
Definition: net.h:1068
CConnman::threadMessageHandler
std::thread threadMessageHandler
Definition: net.h:1168
TransportSerializer::prepareForTransport
virtual void prepareForTransport(CSerializedNetMsg &msg, std::vector< unsigned char > &header)=0
uint256
256-bit opaque blob.
Definition: uint256.h:124
CNode::cs_SubVer
RecursiveMutex cs_SubVer
Definition: net.h:436
MAX_FEELER_CONNECTIONS
static const int MAX_FEELER_CONNECTIONS
Maximum number of feeler connections.
Definition: net.h:68
CNetMessage::m_recv
CDataStream m_recv
received message data
Definition: net.h:285
cs_mapLocalHost
RecursiveMutex cs_mapLocalHost
Definition: net.cpp:111
LogPrint
#define LogPrint(category,...)
Definition: logging.h:188
CConnman::Options::nReceiveFloodSize
unsigned int nReceiveFloodSize
Definition: net.h:763
CNode::IsBlockOnlyConn
bool IsBlockOnlyConn() const
Definition: net.h:483
CConnman::nSeed0
const uint64_t nSeed0
SipHasher seeds for deterministic randomness.
Definition: net.h:1141
ConnectionType::FEELER
@ FEELER
Feeler connections are short-lived connections made to check that a node is alive.
CNodeStats::m_conn_type
ConnectionType m_conn_type
Definition: net.h:275
CConnman::~CConnman
~CConnman()
Definition: net.cpp:2729
CConnman::Options
Definition: net.h:751
CNode::GUARDED_BY
uint64_t nSendBytes GUARDED_BY(cs_vSend)
Definition: net.h:410
CConnman::GetReceiveFloodSize
unsigned int GetReceiveFloodSize() const
Definition: net.cpp:2974
CNode::grantOutbound
CSemaphoreGrant grantOutbound
Definition: net.h:453
CConnman::GetMaxOutboundTarget
uint64_t GetMaxOutboundTarget() const
Definition: net.cpp:2903
CNode::GUARDED_BY
std::string cleanSubVer GUARDED_BY(cs_SubVer)
cleanSubVer is a sanitized string of the user agent byte array we read from the wire.
Definition: net.h:441
IsReachable
bool IsReachable(enum Network net)
Definition: net.cpp:277
CNode::TxRelay::minFeeFilter
std::atomic< CAmount > minFeeFilter
Minimum fee rate with which to filter inv's to this node.
Definition: net.h:552
NodeEvictionCandidate::m_is_local
bool m_is_local
Definition: net.h:1212
NetEventsInterface::ProcessMessages
virtual bool ProcessMessages(CNode *pnode, std::atomic< bool > &interrupt)=0
Process protocol messages received from a given node.
CConnman::Options::nMaxConnections
int nMaxConnections
Definition: net.h:754
DEFAULT_MAX_UPLOAD_TARGET
static constexpr uint64_t DEFAULT_MAX_UPLOAD_TARGET
The default for -maxuploadtarget.
Definition: net.h:74
CDataStream::SetVersion
void SetVersion(int n)
Definition: streams.h:362
NODE_NONE
@ NODE_NONE
Definition: protocol.h:274
CNodeStats::nLastSend
int64_t nLastSend
Definition: net.h:245
CSerializedNetMsg::CSerializedNetMsg
CSerializedNetMsg()=default
BanMan
Definition: banman.h:58
CNodeStats::nTimeOffset
int64_t nTimeOffset
Definition: net.h:250
CConnman::Options::nSendBufferMaxSize
unsigned int nSendBufferMaxSize
Definition: net.h:762
CConnman::ListenSocket::m_permissions
NetPermissionFlags m_permissions
Definition: net.h:964
NodeEvictionCandidate::nTimeConnected
int64_t nTimeConnected
Definition: net.h:1203
CNode::nKeyedNetGroup
const uint64_t nKeyedNetGroup
Definition: net.h:456
CConnman::nLastNodeId
std::atomic< NodeId > nLastNodeId
Definition: net.h:1070
CNode::nLastTXTime
std::atomic< int64_t > nLastTXTime
UNIX epoch time of the last transaction received from this peer that we had not yet seen (e....
Definition: net.h:571
CConnman::RemoveAddedNode
bool RemoveAddedNode(const std::string &node)
Definition: net.cpp:2798
fListen
bool fListen
Definition: net.cpp:110
V1TransportDeserializer::hdrbuf
CDataStream hdrbuf
Definition: net.h:324
CNode::IsManualConn
bool IsManualConn() const
Definition: net.h:479
CConnman::Options::uiInterface
CClientUIInterface * uiInterface
Definition: net.h:759
AddedNodeInfo::resolvedAddress
CService resolvedAddress
Definition: net.h:93
CConnman::GetExtraFullOutboundCount
int GetExtraFullOutboundCount() const
Definition: net.cpp:1805
fDiscover
bool fDiscover
Definition: net.cpp:109
CConnman::GUARDED_BY
uint64_t nTotalBytesSent GUARDED_BY(cs_totalBytesSent)
Definition: net.h:1042
CConnman::GetCurrentBlockRelayOnlyConns
std::vector< CAddress > GetCurrentBlockRelayOnlyConns() const
Return vector of current BLOCK_RELAY peers.
Definition: net.cpp:2105
CConnman::nSeed1
const uint64_t nSeed1
Definition: net.h:1141
CConnman
Definition: net.h:747
CConnman::threadI2PAcceptIncoming
std::thread threadI2PAcceptIncoming
Definition: net.h:1169
CAddrMan
Stochastical (IP) address manager.
Definition: addrman.h:177
CAddrMan::m_asmap
std::vector< bool > m_asmap
Definition: addrman.h:194
V1TransportDeserializer::Reset
void Reset()
Definition: net.h:334
CNode::id
const NodeId id
Definition: net.h:674
CConnman::Options::nMaxFeeler
int nMaxFeeler
Definition: net.h:758
CConnman::StopNodes
void StopNodes()
Definition: net.cpp:2680
CConnman::m_try_another_outbound_peer
std::atomic_bool m_try_another_outbound_peer
flag for deciding to connect to an extra outbound peer, in excess of m_max_outbound_full_relay This t...
Definition: net.h:1174
CNode::cs_sendProcessing
RecursiveMutex cs_sendProcessing
Definition: net.h:420
NetEventsInterface::~NetEventsInterface
~NetEventsInterface()=default
Protected destructor so that instances can only be deleted by derived classes.
V1TransportDeserializer::GetMessageHash
const uint256 & GetMessageHash() const
Definition: net.cpp:728
LocalServiceInfo::nScore
int nScore
Definition: net.h:229
GetLocal
bool GetLocal(CService &addr, const CNetAddr *paddrPeer=nullptr)
Definition: net.cpp:128
CNodeStats::nSendBytes
uint64_t nSendBytes
Definition: net.h:258
CAddress
A CService with information about it as peer.
Definition: protocol.h:358
MAX_BLOCK_RELAY_ONLY_CONNECTIONS
static const int MAX_BLOCK_RELAY_ONLY_CONNECTIONS
Maximum number of block-relay-only outgoing connections.
Definition: net.h:66
CMessageHeader
Message header.
Definition: protocol.h:30
CNodeStats::m_bip152_highbandwidth_to
bool m_bip152_highbandwidth_to
Definition: net.h:255
CConnman::SetNetworkActive
void SetNetworkActive(bool active)
Definition: net.cpp:2441
CNode::nLocalHostNonce
const uint64_t nLocalHostNonce
Definition: net.h:675
CConnman::NodeFullyConnected
static bool NodeFullyConnected(const CNode *pnode)
Definition: net.cpp:3013
CNodeStats::nLastTXTime
int64_t nLastTXTime
Definition: net.h:247
DEFAULT_WHITELISTRELAY
static const bool DEFAULT_WHITELISTRELAY
Default for -whitelistrelay.
Definition: net.h:47
LocalServiceInfo
Definition: net.h:228
ConnectionTypeAsString
std::string ConnectionTypeAsString(ConnectionType conn_type)
Convert ConnectionType enum to a string value.
Definition: net.cpp:517
CNode::cs_addrName
RecursiveMutex cs_addrName
Definition: net.h:698
NetPermissions::AddFlag
static void AddFlag(NetPermissionFlags &flags, NetPermissionFlags f)
Definition: net_permissions.h:58
CNetMessage::m_message_size
uint32_t m_message_size
size of the payload
Definition: net.h:287
CConnman::Options::m_msgproc
NetEventsInterface * m_msgproc
Definition: net.h:760
CNode::m_inbound_onion
const bool m_inbound_onion
Whether this peer is an inbound onion, i.e. connected via our Tor onion service.
Definition: net.h:434
CNetMessage::CNetMessage
CNetMessage(CDataStream &&recv_in)
Definition: net.h:291
MAX_ADDNODE_CONNECTIONS
static const int MAX_ADDNODE_CONNECTIONS
Maximum number of addnode outgoing nodes.
Definition: net.h:64
CDataStream::clear
void clear()
Definition: streams.h:261
EXCLUSIVE_LOCKS_REQUIRED
#define EXCLUSIVE_LOCKS_REQUIRED(...)
Definition: threadsafety.h:49
CConnman::cs_vNodes
RecursiveMutex cs_vNodes
Definition: net.h:1069
LOCK
#define LOCK(cs)
Definition: sync.h:232
V1TransportDeserializer::SetVersion
void SetVersion(int nVersionIn) override
Definition: net.h:361
CNode::m_prefer_evict
bool m_prefer_evict
Definition: net.h:442
ConnectionType::ADDR_FETCH
@ ADDR_FETCH
AddrFetch connections are short lived connections used to solicit addresses from peers.
CConnman::GetExtraBlockRelayCount
int GetExtraBlockRelayCount() const
Definition: net.cpp:1819
CNetMessage::SetVersion
void SetVersion(int nVersionIn)
Definition: net.h:293
i2p.h
NetEventsInterface::FinalizeNode
virtual void FinalizeNode(const CNode &node)=0
Handle removal of a peer (clear state)
V1TransportDeserializer::GetMessage
std::optional< CNetMessage > GetMessage(std::chrono::microseconds time, uint32_t &out_err_raw_size) override
Definition: net.cpp:736
CConnman::ForEachNode
void ForEachNode(const NodeFn &func)
Definition: net.h:832
CNode::CloseSocketDisconnect
void CloseSocketDisconnect()
Definition: net.cpp:500
CNode::ConnectionTypeAsString
std::string ConnectionTypeAsString() const
Definition: net.h:665
V1TransportDeserializer
Definition: net.h:316
TransportSerializer
The TransportSerializer prepares messages for the network transport.
Definition: net.h:381
CNode::TxRelay::PT_GUARDED_BY
std::unique_ptr< CBloomFilter > pfilter PT_GUARDED_BY(cs_filter) GUARDED_BY(cs_filter)
Definition: net.h:538
CNetMessage
Transport protocol agnostic message container.
Definition: net.h:283
LOCAL_IF
@ LOCAL_IF
Definition: net.h:191
NodeEvictionCandidate::prefer_evict
bool prefer_evict
Definition: net.h:1211
CNode::cs_addrLocal
RecursiveMutex cs_addrLocal
Definition: net.h:703
CConnman::SocketHandler
void SocketHandler()
Definition: net.cpp:1513
CNode::m_last_ping_time
std::atomic< std::chrono::microseconds > m_last_ping_time
Last measured round-trip time.
Definition: net.h:574
CNode::GetAddrLocal
CService GetAddrLocal() const
Definition: net.cpp:549
CConnman::DisconnectNodes
void DisconnectNodes()
Definition: net.cpp:1248
CDataStream::resize
void resize(size_type n, value_type c=0)
Definition: streams.h:257
mapMsgCmdSize
std::map< std::string, uint64_t > mapMsgCmdSize
Definition: net.h:237
FEELER_INTERVAL
static constexpr auto FEELER_INTERVAL
Run the feeler connection loop once every 2 minutes.
Definition: net.h:54
CConnman::GetAddedNodeInfo
std::vector< AddedNodeInfo > GetAddedNodeInfo() const
Definition: net.cpp:2118
NET_MESSAGE_COMMAND_OTHER
const std::string NET_MESSAGE_COMMAND_OTHER
Definition: net.cpp:101
CNode::GetLocalNonce
uint64_t GetLocalNonce() const
Definition: net.h:589
LocalServiceInfo::nPort
uint16_t nPort
Definition: net.h:230
CNode::nLastBlockTime
std::atomic< int64_t > nLastBlockTime
UNIX epoch time of the last block received from this peer that we had not yet seen (e....
Definition: net.h:565
hash.h
CConnman::Options::m_specified_outgoing
std::vector< std::string > m_specified_outgoing
Definition: net.h:775
CConnman::Stop
void Stop()
Definition: net.h:814
DEFAULT_PEER_CONNECT_TIMEOUT
static const int64_t DEFAULT_PEER_CONNECT_TIMEOUT
-peertimeout default
Definition: net.h:78
CNode::HasPermission
bool HasPermission(NetPermissionFlags permission) const
Definition: net.h:443
node
Definition: interfaces.cpp:68
NUM_FDS_MESSAGE_CAPTURE
static const int NUM_FDS_MESSAGE_CAPTURE
Number of file descriptors required for message capture.
Definition: net.h:80
assert
assert(s1.IsAddrV1Compatible())
CConnman::AddNode
bool AddNode(const std::string &node)
Definition: net.cpp:2787
CNode::IsInboundConn
bool IsInboundConn() const
Definition: net.h:495
CNode::operator=
CNode & operator=(const CNode &)=delete
CNode::vRecvMsg
std::list< CNetMessage > vRecvMsg
Definition: net.h:696
CDataStream
Double ended buffer combining vector and stream-like interfaces.
Definition: streams.h:204
CConnman::ListenSocket::ListenSocket
ListenSocket(SOCKET socket_, NetPermissionFlags permissions_)
Definition: net.h:962
addrman.h
V1TransportDeserializer::Read
int Read(Span< const uint8_t > &msg_bytes) override
read and deserialize data, advances msg_bytes data pointer
Definition: net.h:366
V1TransportSerializer::prepareForTransport
void prepareForTransport(CSerializedNetMsg &msg, std::vector< unsigned char > &header) override
Definition: net.cpp:773
CConnman::threadOpenAddedConnections
std::thread threadOpenAddedConnections
Definition: net.h:1166
CConnman::GetNetworkActive
bool GetNetworkActive() const
Definition: net.h:821
CConnman::GetUseAddrmanOutgoing
bool GetUseAddrmanOutgoing() const
Definition: net.h:822
CConnman::CachedAddrResponse::m_cache_entry_expiration
std::chrono::microseconds m_cache_entry_expiration
Definition: net.h:1081
CNode::SetAddrLocal
void SetAddrLocal(const CService &addrLocalIn)
May not be called more than once.
Definition: net.cpp:554
CHash256
A hasher class for Bitcoin's 256-bit hash (double SHA-256).
Definition: hash.h:24
V1TransportDeserializer::m_node_id
const NodeId m_node_id
Definition: net.h:320
CConnman::NodeFn
std::function< void(CNode *)> NodeFn
Definition: net.h:831
CNode::m_min_ping_time
std::atomic< std::chrono::microseconds > m_min_ping_time
Lowest measured round-trip time.
Definition: net.h:578
CConnman::Options::m_max_outbound_full_relay
int m_max_outbound_full_relay
Definition: net.h:755
ConnectionType::BLOCK_RELAY
@ BLOCK_RELAY
We use block-relay-only connections to help prevent against partition attacks.
netbase.h
CConnman::GUARDED_BY
std::chrono::seconds nMaxOutboundCycleStartTime GUARDED_BY(cs_totalBytesSent)
Definition: net.h:1046
RemoveLocal
void RemoveLocal(const CService &addr)
Definition: net.cpp:262
LOCAL_NONE
@ LOCAL_NONE
Definition: net.h:190
CNode::ReceiveMsgBytes
bool ReceiveMsgBytes(Span< const uint8_t > msg_bytes, bool &complete)
Receive bytes from the buffer and deserialize them into messages.
Definition: net.cpp:627
CConnman::CConnmanTest
friend struct CConnmanTest
Definition: net.h:1190
CNodeStats::nRecvBytes
uint64_t nRecvBytes
Definition: net.h:260
CConnman::ThreadI2PAcceptIncoming
void ThreadI2PAcceptIncoming()
Definition: net.cpp:2290
ConnectionDirection
ConnectionDirection
Definition: netbase.h:32
DEFAULT_WHITELISTFORCERELAY
static const bool DEFAULT_WHITELISTFORCERELAY
Default for -whitelistforcerelay.
Definition: net.h:49
CNode::MaybeSetAddrName
void MaybeSetAddrName(const std::string &addrNameIn)
Sets the addrName only if it was not previously set.
Definition: net.cpp:542
CConnman::ThreadOpenConnections
void ThreadOpenConnections(std::vector< std::string > connect)
Definition: net.cpp:1833
CConnman::semOutbound
std::unique_ptr< CSemaphore > semOutbound
Definition: net.h:1114
CNode::nVersion
std::atomic< int > nVersion
Definition: net.h:435
BCLog::NET
@ NET
Definition: logging.h:38
CConnman::semAddnode
std::unique_ptr< CSemaphore > semAddnode
Definition: net.h:1115
CConnman::m_next_send_inv_to_incoming
std::atomic< std::chrono::microseconds > m_next_send_inv_to_incoming
Definition: net.h:1182
CConnman::GetTotalBytesSent
uint64_t GetTotalBytesSent() const
Definition: net.cpp:2963
CConnman::flagInterruptMsgProc
std::atomic< bool > flagInterruptMsgProc
Definition: net.h:1148
DEFAULT_BLOCKSONLY
static const bool DEFAULT_BLOCKSONLY
Default for blocks only.
Definition: net.h:76
CConnman::m_msgproc
NetEventsInterface * m_msgproc
Definition: net.h:1130
CConnman::threadDNSAddressSeed
std::thread threadDNSAddressSeed
Definition: net.h:1164
CConnman::Init
void Init(const Options &connOptions)
Definition: net.h:781
CConnman::GenerateSelectSet
bool GenerateSelectSet(std::set< SOCKET > &recv_set, std::set< SOCKET > &send_set, std::set< SOCKET > &error_set)
Definition: net.cpp:1349
DEFAULT_DNSSEED
static constexpr bool DEFAULT_DNSSEED
Definition: net.h:83
LOCAL_BIND
@ LOCAL_BIND
Definition: net.h:192
V1TransportDeserializer::m_chain_params
const CChainParams & m_chain_params
Definition: net.h:319
CNode::fClient
bool fClient
Definition: net.h:446
CConnman::m_i2p_sam_session
std::unique_ptr< i2p::sam::Session > m_i2p_sam_session
I2P SAM session.
Definition: net.h:1162
CNode::IsFullOutboundConn
bool IsFullOutboundConn() const
Definition: net.h:475
CConnman::threadSocketHandler
std::thread threadSocketHandler
Definition: net.h:1165
CConnman::CheckIncomingNonce
bool CheckIncomingNonce(uint64_t nonce)
Definition: net.cpp:357
CConnman::m_max_outbound_block_relay
int m_max_outbound_block_relay
Definition: net.h:1123
CConnman::Options::m_asmap
std::vector< bool > m_asmap
Definition: net.h:777
CNode::m_greatest_common_version
std::atomic< int > m_greatest_common_version
Definition: net.h:677
CNode::TxRelay::GUARDED_BY
bool fSendMempool GUARDED_BY(cs_tx_inventory)
Definition: net.h:546
amount.h
CThreadInterrupt
Definition: threadinterrupt.h:19
CNode::TxRelay::GUARDED_BY
bool fRelayTxes GUARDED_BY(cs_filter)
Definition: net.h:537
ConnectionType
ConnectionType
Different types of connections to a peer.
Definition: net.h:121
TransportDeserializer::Complete
virtual bool Complete() const =0
IsLocal
bool IsLocal(const CService &addr)
check whether a given address is potentially local
Definition: net.cpp:302
CNode::fPauseSend
std::atomic_bool fPauseSend
Definition: net.h:458
CRollingBloomFilter
RollingBloomFilter is a probabilistic "keep track of most recently inserted" set.
Definition: bloom.h:110
CNodeStats::nServices
ServiceFlags nServices
Definition: net.h:243
CNodeStats
Definition: net.h:239
nonce
unsigned int nonce
Definition: miner_tests.cpp:53
V1TransportDeserializer::readHeader
int readHeader(Span< const uint8_t > msg_bytes)
Definition: net.cpp:671
strSubVersion
std::string strSubVersion
Subversion as sent to the P2P network in version messages.
Definition: net.cpp:114
GetLocalAddrForPeer
std::optional< CAddress > GetLocalAddrForPeer(CNode *pnode)
Returns a local address that we should advertise to this peer.
Definition: net.cpp:205
CaptureMessage
void CaptureMessage(const CAddress &addr, const std::string &msg_type, const Span< const unsigned char > &data, bool is_incoming)
Dump binary message to file, with timestamp.
Definition: net.cpp:3101
MAX_SUBVERSION_LENGTH
static const unsigned int MAX_SUBVERSION_LENGTH
Maximum length of the user agent string in version message.
Definition: net.h:60
CConnman::m_use_addrman_outgoing
bool m_use_addrman_outgoing
Definition: net.h:1128
CConnman::AddWhitelistPermissionFlags
void AddWhitelistPermissionFlags(NetPermissionFlags &flags, const CNetAddr &addr) const
Definition: net.cpp:511
CConnman::clientInterface
CClientUIInterface * clientInterface
Definition: net.h:1129
CConnman::Options::vWhiteBinds
std::vector< NetWhitebindPermissions > vWhiteBinds
Definition: net.h:768
CConnman::fNetworkActive
std::atomic< bool > fNetworkActive
Definition: net.h:1060
CConnman::interruptNet
CThreadInterrupt interruptNet
This is signaled when network activity should cease.
Definition: net.h:1156
CNodeStats::m_bip152_highbandwidth_from
bool m_bip152_highbandwidth_from
Definition: net.h:256
CConnman::GetDeterministicRandomizer
CSipHasher GetDeterministicRandomizer(uint64_t id) const
Get a unique deterministic randomizer.
Definition: net.cpp:3089
CConnman::GetNodeCount
size_t GetNodeCount(ConnectionDirection) const
Definition: net.cpp:2810
CConnman::nMaxAddnode
int nMaxAddnode
Definition: net.h:1125
GUARDED_BY
std::map< CNetAddr, LocalServiceInfo > mapLocalHost GUARDED_BY(cs_mapLocalHost)
CConnman::nMaxConnections
int nMaxConnections
Definition: net.h:1116
CConnman::GetAddresses
std::vector< CAddress > GetAddresses(size_t max_addresses, size_t max_pct, std::optional< Network > network) const
Return all or many randomly selected addresses, optionally by network.
Definition: net.cpp:2735
CConnman::PushMessage
void PushMessage(CNode *pnode, CSerializedNetMsg &&msg)
Definition: net.cpp:3018
CConnman::ShouldRunInactivityChecks
bool ShouldRunInactivityChecks(const CNode &node, std::optional< int64_t > now=std::nullopt) const
Return true if we should disconnect the peer for failing an inactivity check.
Definition: net.cpp:1312
CNode::~CNode
~CNode()
Definition: net.cpp:3008
CConnman::BindListenPort
bool BindListenPort(const CService &bindAddr, bilingual_str &strError, NetPermissionFlags permissions)
Definition: net.cpp:2329
CNetMessage::m_raw_message_size
uint32_t m_raw_message_size
used wire size of the message (including header/checksum)
Definition: net.h:288
TIMEOUT_INTERVAL
static const int TIMEOUT_INTERVAL
Time after which to disconnect, after waiting for a ping response (or inactivity).
Definition: net.h:52
V1TransportDeserializer::nDataPos
unsigned int nDataPos
Definition: net.h:328
CConnman::Options::m_banman
BanMan * m_banman
Definition: net.h:761
GetLocalAddress
CAddress GetLocalAddress(const CNetAddr *paddrPeer, ServiceFlags nLocalServices)
Definition: net.cpp:178
EXTRA_BLOCK_RELAY_ONLY_PEER_INTERVAL
static constexpr auto EXTRA_BLOCK_RELAY_ONLY_PEER_INTERVAL
Run the extra block-relay-only connection loop once every 5 minutes.
Definition: net.h:56
CSerializedNetMsg::operator=
CSerializedNetMsg & operator=(CSerializedNetMsg &&)=default
CNode::CNode
CNode(NodeId id, ServiceFlags nLocalServicesIn, SOCKET hSocketIn, const CAddress &addrIn, uint64_t nKeyedNetGroupIn, uint64_t nLocalHostNonceIn, const CAddress &addrBindIn, const std::string &addrNameIn, ConnectionType conn_type_in, bool inbound_onion)
Definition: net.cpp:2976
Span::subspan
CONSTEXPR_IF_NOT_DEBUG Span< C > subspan(std::size_t offset) const noexcept
Definition: span.h:189
V1TransportDeserializer::nHdrPos
unsigned int nHdrPos
Definition: net.h:327
INIT_PROTO_VERSION
static const int INIT_PROTO_VERSION
initial proto version, to be increased after version/verack negotiation
Definition: version.h:15
CNode::fPauseRecv
std::atomic_bool fPauseRecv
Definition: net.h:457
CConnman::RecordBytesSent
void RecordBytesSent(uint64_t bytes)
Definition: net.cpp:2886
TransportDeserializer::SetVersion
virtual void SetVersion(int version)=0
net_permissions.h
CNode::TxRelay::nNextInvSend
std::chrono::microseconds nNextInvSend
Definition: net.h:549
CConnman::GetOutboundTargetBytesLeft
uint64_t GetOutboundTargetBytesLeft() const
response the bytes left in the current max outbound cycle in case of no limit, it will always respons...
Definition: net.cpp:2948
DEFAULT_LISTEN
static const bool DEFAULT_LISTEN
-listen default
Definition: net.h:70
SOCKET
unsigned int SOCKET
Definition: compat.h:41
IsPeerAddrLocalGood
bool IsPeerAddrLocalGood(CNode *pnode)
Definition: net.cpp:198
NodeEvictionCandidate::nLastBlockTime
int64_t nLastBlockTime
Definition: net.h:1205
NodeEvictionCandidate::nLastTXTime
int64_t nLastTXTime
Definition: net.h:1206
CConnman::DeleteNode
void DeleteNode(CNode *pnode)
Definition: net.cpp:2722
CNode::addrBind
const CAddress addrBind
Definition: net.h:432
CConnman::ForEachNode
void ForEachNode(const NodeFn &func) const
Definition: net.h:841
NodeEvictionCandidate::fRelevantServices
bool fRelevantServices
Definition: net.h:1207