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 <addrman.h>
10 #include <chainparams.h>
11 #include <common/bloom.h>
12 #include <compat.h>
13 #include <consensus/amount.h>
14 #include <crypto/siphash.h>
15 #include <hash.h>
16 #include <i2p.h>
17 #include <net_permissions.h>
18 #include <netaddress.h>
19 #include <netbase.h>
20 #include <policy/feerate.h>
21 #include <protocol.h>
22 #include <random.h>
23 #include <span.h>
24 #include <streams.h>
25 #include <sync.h>
26 #include <threadinterrupt.h>
27 #include <uint256.h>
28 #include <util/check.h>
29 
30 #include <atomic>
31 #include <condition_variable>
32 #include <cstdint>
33 #include <deque>
34 #include <map>
35 #include <memory>
36 #include <optional>
37 #include <thread>
38 #include <vector>
39 
40 class CScheduler;
41 class CNode;
42 class BanMan;
43 struct bilingual_str;
44 
46 static const bool DEFAULT_WHITELISTRELAY = true;
48 static const bool DEFAULT_WHITELISTFORCERELAY = false;
49 
51 static const int TIMEOUT_INTERVAL = 20 * 60;
53 static constexpr auto FEELER_INTERVAL = 2min;
55 static constexpr auto EXTRA_BLOCK_RELAY_ONLY_PEER_INTERVAL = 5min;
57 static const unsigned int MAX_PROTOCOL_MESSAGE_LENGTH = 4 * 1000 * 1000;
59 static const unsigned int MAX_SUBVERSION_LENGTH = 256;
63 static const int MAX_ADDNODE_CONNECTIONS = 8;
65 static const int MAX_BLOCK_RELAY_ONLY_CONNECTIONS = 2;
67 static const int MAX_FEELER_CONNECTIONS = 1;
69 static const bool DEFAULT_LISTEN = true;
71 static const unsigned int DEFAULT_MAX_PEER_CONNECTIONS = 125;
73 static const std::string DEFAULT_MAX_UPLOAD_TARGET{"0M"};
75 static const bool DEFAULT_BLOCKSONLY = false;
77 static const int64_t DEFAULT_PEER_CONNECT_TIMEOUT = 60;
79 static const int NUM_FDS_MESSAGE_CAPTURE = 1;
80 
81 static constexpr bool DEFAULT_FORCEDNSSEED{false};
82 static constexpr bool DEFAULT_DNSSEED{true};
83 static constexpr bool DEFAULT_FIXEDSEEDS{true};
84 static const size_t DEFAULT_MAXRECEIVEBUFFER = 5 * 1000;
85 static const size_t DEFAULT_MAXSENDBUFFER = 1 * 1000;
86 
87 typedef int64_t NodeId;
88 
90 {
91  std::string strAddedNode;
93  bool fConnected;
94  bool fInbound;
95 };
96 
97 class CNodeStats;
98 class CClientUIInterface;
99 
101 {
102  CSerializedNetMsg() = default;
105  // No copying, only moves.
106  CSerializedNetMsg(const CSerializedNetMsg& msg) = delete;
108 
109  std::vector<unsigned char> data;
110  std::string m_type;
111 };
112 
120 enum class ConnectionType {
126  INBOUND,
127 
135 
136 
143  MANUAL,
144 
160  FEELER,
161 
171  BLOCK_RELAY,
172 
179  ADDR_FETCH,
180 };
181 
183 std::string ConnectionTypeAsString(ConnectionType conn_type);
184 void Discover();
185 uint16_t GetListenPort();
186 
187 enum
188 {
189  LOCAL_NONE, // unknown
190  LOCAL_IF, // address a local interface listens on
191  LOCAL_BIND, // address explicit bound to
192  LOCAL_MAPPED, // address reported by UPnP or NAT-PMP
193  LOCAL_MANUAL, // address explicitly specified (-externalip=)
194 
196 };
197 
198 bool IsPeerAddrLocalGood(CNode *pnode);
200 std::optional<CAddress> GetLocalAddrForPeer(CNode *pnode);
201 
206 void SetReachable(enum Network net, bool reachable);
208 bool IsReachable(enum Network net);
210 bool IsReachable(const CNetAddr& addr);
211 
212 bool AddLocal(const CService& addr, int nScore = LOCAL_NONE);
213 bool AddLocal(const CNetAddr& addr, int nScore = LOCAL_NONE);
214 void RemoveLocal(const CService& addr);
215 bool SeenLocal(const CService& addr);
216 bool IsLocal(const CService& addr);
217 bool GetLocal(CService &addr, const CNetAddr *paddrPeer = nullptr);
218 CAddress GetLocalAddress(const CNetAddr *paddrPeer, ServiceFlags nLocalServices);
219 
220 
221 extern bool fDiscover;
222 extern bool fListen;
223 
225 extern std::string strSubVersion;
226 
228  int nScore;
229  uint16_t nPort;
230 };
231 
233 extern std::map<CNetAddr, LocalServiceInfo> mapLocalHost GUARDED_BY(cs_mapLocalHost);
234 
235 extern const std::string NET_MESSAGE_COMMAND_OTHER;
236 typedef std::map<std::string, uint64_t> mapMsgCmdSize; //command, total bytes
237 
239 {
240 public:
244  int64_t nLastSend;
245  int64_t nLastRecv;
246  int64_t nLastTXTime;
247  int64_t nLastBlockTime;
248  int64_t nTimeConnected;
249  int64_t nTimeOffset;
250  std::string m_addr_name;
251  int nVersion;
252  std::string cleanSubVer;
253  bool fInbound;
257  uint64_t nSendBytes;
259  uint64_t nRecvBytes;
262  std::chrono::microseconds m_last_ping_time;
263  std::chrono::microseconds m_min_ping_time;
265  // Our address, as reported by the peer
266  std::string addrLocal;
267  // Address of this peer
269  // Bind address of our side of the connection
271  // Network the peer connected through
273  uint32_t m_mapped_as;
275 };
276 
277 
282 class CNetMessage {
283 public:
285  std::chrono::microseconds m_time{0};
286  uint32_t m_message_size{0};
287  uint32_t m_raw_message_size{0};
288  std::string m_command;
289 
290  CNetMessage(CDataStream&& recv_in) : m_recv(std::move(recv_in)) {}
291 
292  void SetVersion(int nVersionIn)
293  {
294  m_recv.SetVersion(nVersionIn);
295  }
296 };
297 
303 public:
304  // returns true if the current deserialization is complete
305  virtual bool Complete() const = 0;
306  // set the serialization context version
307  virtual void SetVersion(int version) = 0;
309  virtual int Read(Span<const uint8_t>& msg_bytes) = 0;
310  // decomposes a message from the context
311  virtual CNetMessage GetMessage(std::chrono::microseconds time, bool& reject_message) = 0;
313 };
314 
316 {
317 private:
319  const NodeId m_node_id; // Only for logging
320  mutable CHash256 hasher;
322  bool in_data; // parsing header (false) or data (true)
323  CDataStream hdrbuf; // partially received header
324  CMessageHeader hdr; // complete header
325  CDataStream vRecv; // received message data
326  unsigned int nHdrPos;
327  unsigned int nDataPos;
328 
329  const uint256& GetMessageHash() const;
330  int readHeader(Span<const uint8_t> msg_bytes);
331  int readData(Span<const uint8_t> msg_bytes);
332 
333  void Reset() {
334  vRecv.clear();
335  hdrbuf.clear();
336  hdrbuf.resize(24);
337  in_data = false;
338  nHdrPos = 0;
339  nDataPos = 0;
340  data_hash.SetNull();
341  hasher.Reset();
342  }
343 
344 public:
345  V1TransportDeserializer(const CChainParams& chain_params, const NodeId node_id, int nTypeIn, int nVersionIn)
346  : m_chain_params(chain_params),
347  m_node_id(node_id),
348  hdrbuf(nTypeIn, nVersionIn),
349  vRecv(nTypeIn, nVersionIn)
350  {
351  Reset();
352  }
353 
354  bool Complete() const override
355  {
356  if (!in_data)
357  return false;
358  return (hdr.nMessageSize == nDataPos);
359  }
360  void SetVersion(int nVersionIn) override
361  {
362  hdrbuf.SetVersion(nVersionIn);
363  vRecv.SetVersion(nVersionIn);
364  }
365  int Read(Span<const uint8_t>& msg_bytes) override
366  {
367  int ret = in_data ? readData(msg_bytes) : readHeader(msg_bytes);
368  if (ret < 0) {
369  Reset();
370  } else {
371  msg_bytes = msg_bytes.subspan(ret);
372  }
373  return ret;
374  }
375  CNetMessage GetMessage(std::chrono::microseconds time, bool& reject_message) override;
376 };
377 
381 public:
382  // prepare message for transport (header construction, error-correction computation, payload encryption, etc.)
383  virtual void prepareForTransport(CSerializedNetMsg& msg, std::vector<unsigned char>& header) = 0;
384  virtual ~TransportSerializer() {}
385 };
386 
388 public:
389  void prepareForTransport(CSerializedNetMsg& msg, std::vector<unsigned char>& header) override;
390 };
391 
393 class CNode
394 {
395  friend class CConnman;
396  friend struct ConnmanTestMsg;
397 
398 public:
399  std::unique_ptr<TransportDeserializer> m_deserializer;
400  std::unique_ptr<TransportSerializer> m_serializer;
401 
403  std::atomic<ServiceFlags> nServices{NODE_NONE};
404  SOCKET hSocket GUARDED_BY(cs_hSocket);
406  size_t nSendSize GUARDED_BY(cs_vSend){0};
408  size_t nSendOffset GUARDED_BY(cs_vSend){0};
409  uint64_t nSendBytes GUARDED_BY(cs_vSend){0};
410  std::deque<std::vector<unsigned char>> vSendMsg GUARDED_BY(cs_vSend);
414 
416  std::list<CNetMessage> vProcessMsg GUARDED_BY(cs_vProcessMsg);
417  size_t nProcessQueueSize{0};
418 
420 
421  uint64_t nRecvBytes GUARDED_BY(cs_vRecv){0};
422 
423  std::atomic<int64_t> nLastSend{0};
424  std::atomic<int64_t> nLastRecv{0};
426  const int64_t nTimeConnected;
427  std::atomic<int64_t> nTimeOffset{0};
428  // Address of this peer
429  const CAddress addr;
430  // Bind address of our side of the connection
432  const std::string m_addr_name;
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);
655 
657  {
658  return nLocalServices;
659  }
660 
662 
664  void PongReceived(std::chrono::microseconds ping_time) {
665  m_last_ping_time = ping_time;
666  m_min_ping_time = std::min(m_min_ping_time.load(), ping_time);
667  }
668 
669 private:
670  const NodeId id;
671  const uint64_t nLocalHostNonce;
674 
691 
692  std::list<CNetMessage> vRecvMsg; // Used only by SocketHandler thread
693 
694  // Our address, as reported by the peer
695  CService addrLocal GUARDED_BY(cs_addrLocal);
697 
698  mapMsgCmdSize mapSendBytesPerMsgCmd GUARDED_BY(cs_vSend);
699  mapMsgCmdSize mapRecvBytesPerMsgCmd GUARDED_BY(cs_vRecv);
700 };
701 
706 {
707 public:
709  virtual void InitializeNode(CNode* pnode) = 0;
710 
712  virtual void FinalizeNode(const CNode& node) = 0;
713 
721  virtual bool ProcessMessages(CNode* pnode, std::atomic<bool>& interrupt) = 0;
722 
729  virtual bool SendMessages(CNode* pnode) EXCLUSIVE_LOCKS_REQUIRED(pnode->cs_sendProcessing) = 0;
730 
731 
732 protected:
737  ~NetEventsInterface() = default;
738 };
739 
740 class CConnman
741 {
742 public:
743 
744  struct Options
745  {
750  int nMaxAddnode = 0;
751  int nMaxFeeler = 0;
754  BanMan* m_banman = nullptr;
755  unsigned int nSendBufferMaxSize = 0;
756  unsigned int nReceiveFloodSize = 0;
757  uint64_t nMaxOutboundLimit = 0;
759  std::vector<std::string> vSeedNodes;
760  std::vector<NetWhitelistPermissions> vWhitelistedRange;
761  std::vector<NetWhitebindPermissions> vWhiteBinds;
762  std::vector<CService> vBinds;
763  std::vector<CService> onion_binds;
768  std::vector<std::string> m_specified_outgoing;
769  std::vector<std::string> m_added_nodes;
771  };
772 
773  void Init(const Options& connOptions) {
774  nLocalServices = connOptions.nLocalServices;
775  nMaxConnections = connOptions.nMaxConnections;
776  m_max_outbound_full_relay = std::min(connOptions.m_max_outbound_full_relay, connOptions.nMaxConnections);
779  nMaxAddnode = connOptions.nMaxAddnode;
780  nMaxFeeler = connOptions.nMaxFeeler;
782  m_client_interface = connOptions.uiInterface;
783  m_banman = connOptions.m_banman;
784  m_msgproc = connOptions.m_msgproc;
786  nReceiveFloodSize = connOptions.nReceiveFloodSize;
788  {
790  nMaxOutboundLimit = connOptions.nMaxOutboundLimit;
791  }
792  vWhitelistedRange = connOptions.vWhitelistedRange;
793  {
795  m_added_nodes = connOptions.m_added_nodes;
796  }
797  m_onion_binds = connOptions.onion_binds;
798  }
799 
800  CConnman(uint64_t seed0, uint64_t seed1, AddrMan& addrman, bool network_active = true);
801  ~CConnman();
802  bool Start(CScheduler& scheduler, const Options& options);
803 
804  void StopThreads();
805  void StopNodes();
806  void Stop()
807  {
808  StopThreads();
809  StopNodes();
810  };
811 
812  void Interrupt();
813  bool GetNetworkActive() const { return fNetworkActive; };
815  void SetNetworkActive(bool active);
816  void OpenNetworkConnection(const CAddress& addrConnect, bool fCountFailure, CSemaphoreGrant* grantOutbound, const char* strDest, ConnectionType conn_type);
817  bool CheckIncomingNonce(uint64_t nonce);
818 
819  bool ForNode(NodeId id, std::function<bool(CNode* pnode)> func);
820 
821  void PushMessage(CNode* pnode, CSerializedNetMsg&& msg);
822 
823  using NodeFn = std::function<void(CNode*)>;
824  void ForEachNode(const NodeFn& func)
825  {
827  for (auto&& node : m_nodes) {
829  func(node);
830  }
831  };
832 
833  void ForEachNode(const NodeFn& func) const
834  {
836  for (auto&& node : m_nodes) {
838  func(node);
839  }
840  };
841 
842  // Addrman functions
850  std::vector<CAddress> GetAddresses(size_t max_addresses, size_t max_pct, std::optional<Network> network) const;
857  std::vector<CAddress> GetAddresses(CNode& requestor, size_t max_addresses, size_t max_pct);
858 
859  // This allows temporarily exceeding m_max_outbound_full_relay, with the goal of finding
860  // a peer that is better than all our current peers.
861  void SetTryNewOutboundPeer(bool flag);
862  bool GetTryNewOutboundPeer() const;
863 
865  LogPrint(BCLog::NET, "net: enabling extra block-relay-only peers\n");
867  }
868 
869  // Return the number of outbound peers we have in excess of our target (eg,
870  // if we previously called SetTryNewOutboundPeer(true), and have since set
871  // to false, we may have extra peers that we wish to disconnect). This may
872  // return a value less than (num_outbound_connections - num_outbound_slots)
873  // in cases where some outbound connections are not yet fully connected, or
874  // not yet fully disconnected.
875  int GetExtraFullOutboundCount() const;
876  // Count the number of block-relay-only peers we have over our limit.
877  int GetExtraBlockRelayCount() const;
878 
879  bool AddNode(const std::string& node);
880  bool RemoveAddedNode(const std::string& node);
881  std::vector<AddedNodeInfo> GetAddedNodeInfo() const;
882 
895  bool AddConnection(const std::string& address, ConnectionType conn_type);
896 
897  size_t GetNodeCount(ConnectionDirection) const;
898  void GetNodeStats(std::vector<CNodeStats>& vstats) const;
899  bool DisconnectNode(const std::string& node);
900  bool DisconnectNode(const CSubNet& subnet);
901  bool DisconnectNode(const CNetAddr& addr);
902  bool DisconnectNode(NodeId id);
903 
911 
912  uint64_t GetMaxOutboundTarget() const;
913  std::chrono::seconds GetMaxOutboundTimeframe() const;
914 
918  bool OutboundTargetReached(bool historicalBlockServingLimit) const;
919 
922  uint64_t GetOutboundTargetBytesLeft() const;
923 
926  std::chrono::seconds GetMaxOutboundTimeLeftInCycle() const;
927 
928  uint64_t GetTotalBytesRecv() const;
929  uint64_t GetTotalBytesSent() const;
930 
932  CSipHasher GetDeterministicRandomizer(uint64_t id) const;
933 
934  unsigned int GetReceiveFloodSize() const;
935 
936  void WakeMessageHandler();
937 
942  std::chrono::microseconds PoissonNextSendInbound(std::chrono::microseconds now, std::chrono::seconds average_interval);
943 
945  bool ShouldRunInactivityChecks(const CNode& node, int64_t secs_now) const;
946 
947 private:
948  struct ListenSocket {
949  public:
952  ListenSocket(SOCKET socket_, NetPermissionFlags permissions_) : socket(socket_), m_permissions(permissions_) {}
953  private:
955  };
956 
957  bool BindListenPort(const CService& bindAddr, bilingual_str& strError, NetPermissionFlags permissions);
958  bool Bind(const CService& addr, unsigned int flags, NetPermissionFlags permissions);
959  bool InitBinds(const Options& options);
960 
962  void AddAddrFetch(const std::string& strDest);
963  void ProcessAddrFetch();
964  void ThreadOpenConnections(std::vector<std::string> connect);
965  void ThreadMessageHandler();
967  void AcceptConnection(const ListenSocket& hListenSocket);
968 
978  NetPermissionFlags permissionFlags,
979  const CAddress& addr_bind,
980  const CAddress& addr);
981 
982  void DisconnectNodes();
985  bool InactivityCheck(const CNode& node) const;
986 
995  bool GenerateSelectSet(const std::vector<CNode*>& nodes,
996  std::set<SOCKET>& recv_set,
997  std::set<SOCKET>& send_set,
998  std::set<SOCKET>& error_set);
999 
1008  void SocketEvents(const std::vector<CNode*>& nodes,
1009  std::set<SOCKET>& recv_set,
1010  std::set<SOCKET>& send_set,
1011  std::set<SOCKET>& error_set);
1012 
1016  void SocketHandler();
1017 
1026  void SocketHandlerConnected(const std::vector<CNode*>& nodes,
1027  const std::set<SOCKET>& recv_set,
1028  const std::set<SOCKET>& send_set,
1029  const std::set<SOCKET>& error_set);
1030 
1035  void SocketHandlerListening(const std::set<SOCKET>& recv_set);
1036 
1037  void ThreadSocketHandler();
1038  void ThreadDNSAddressSeed();
1039 
1040  uint64_t CalculateKeyedNetGroup(const CAddress& ad) const;
1041 
1042  CNode* FindNode(const CNetAddr& ip);
1043  CNode* FindNode(const CSubNet& subNet);
1044  CNode* FindNode(const std::string& addrName);
1045  CNode* FindNode(const CService& addr);
1046 
1051  bool AlreadyConnectedToAddress(const CAddress& addr);
1052 
1053  bool AttemptToEvictConnection();
1054  CNode* ConnectNode(CAddress addrConnect, const char *pszDest, bool fCountFailure, ConnectionType conn_type);
1056 
1057  void DeleteNode(CNode* pnode);
1058 
1059  NodeId GetNewNodeId();
1060 
1061  size_t SocketSendData(CNode& node) const EXCLUSIVE_LOCKS_REQUIRED(node.cs_vSend);
1062  void DumpAddresses();
1063 
1064  // Network stats
1065  void RecordBytesRecv(uint64_t bytes);
1066  void RecordBytesSent(uint64_t bytes);
1067 
1071  std::vector<CAddress> GetCurrentBlockRelayOnlyConns() const;
1072 
1073  // Whether the node should be passed out in ForEach* callbacks
1074  static bool NodeFullyConnected(const CNode* pnode);
1075 
1076  // Network usage totals
1078  std::atomic<uint64_t> nTotalBytesRecv{0};
1079  uint64_t nTotalBytesSent GUARDED_BY(cs_totalBytesSent) {0};
1080 
1081  // outbound limit & stats
1082  uint64_t nMaxOutboundTotalBytesSentInCycle GUARDED_BY(cs_totalBytesSent) {0};
1083  std::chrono::seconds nMaxOutboundCycleStartTime GUARDED_BY(cs_totalBytesSent) {0};
1084  uint64_t nMaxOutboundLimit GUARDED_BY(cs_totalBytesSent);
1085 
1086  // P2P timeout in seconds
1088 
1089  // Whitelisted ranges. Any node connecting from these is automatically
1090  // whitelisted (as well as those connecting to whitelisted binds).
1091  std::vector<NetWhitelistPermissions> vWhitelistedRange;
1092 
1093  unsigned int nSendBufferMaxSize{0};
1094  unsigned int nReceiveFloodSize{0};
1095 
1096  std::vector<ListenSocket> vhListenSocket;
1097  std::atomic<bool> fNetworkActive{true};
1100  std::deque<std::string> m_addr_fetches GUARDED_BY(m_addr_fetches_mutex);
1102  std::vector<std::string> m_added_nodes GUARDED_BY(m_added_nodes_mutex);
1104  std::vector<CNode*> m_nodes GUARDED_BY(m_nodes_mutex);
1105  std::list<CNode*> m_nodes_disconnected;
1107  std::atomic<NodeId> nLastNodeId{0};
1108  unsigned int nPrevNodeCount{0};
1109 
1117  std::vector<CAddress> m_addrs_response_cache;
1118  std::chrono::microseconds m_cache_entry_expiration{0};
1119  };
1120 
1135  std::map<uint64_t, CachedAddrResponse> m_addr_response_caches;
1136 
1150 
1151  std::unique_ptr<CSemaphore> semOutbound;
1152  std::unique_ptr<CSemaphore> semAddnode;
1154 
1155  // How many full-relay (tx, block, addr) outbound peers we want
1157 
1158  // How many block-relay only outbound peers we want
1159  // We do not relay tx or addr messages with these peers
1161 
1170 
1175  std::vector<CAddress> m_anchors;
1176 
1178  const uint64_t nSeed0, nSeed1;
1179 
1181  bool fMsgProcWake GUARDED_BY(mutexMsgProc);
1182 
1183  std::condition_variable condMsgProc;
1185  std::atomic<bool> flagInterruptMsgProc{false};
1186 
1194 
1199  std::unique_ptr<i2p::sam::Session> m_i2p_sam_session;
1200 
1202  std::thread threadSocketHandler;
1207 
1212 
1217  std::atomic_bool m_start_extra_block_relay_peers{false};
1218 
1219  std::atomic<std::chrono::microseconds> m_next_send_inv_to_incoming{0us};
1220 
1225  std::vector<CService> m_onion_binds;
1226 
1232  {
1233  public:
1234  explicit NodesSnapshot(const CConnman& connman, bool shuffle)
1235  {
1236  {
1237  LOCK(connman.m_nodes_mutex);
1238  m_nodes_copy = connman.m_nodes;
1239  for (auto& node : m_nodes_copy) {
1240  node->AddRef();
1241  }
1242  }
1243  if (shuffle) {
1245  }
1246  }
1247 
1249  {
1250  for (auto& node : m_nodes_copy) {
1251  node->Release();
1252  }
1253  }
1254 
1255  const std::vector<CNode*>& Nodes() const
1256  {
1257  return m_nodes_copy;
1258  }
1259 
1260  private:
1261  std::vector<CNode*> m_nodes_copy;
1262  };
1263 
1264  friend struct CConnmanTest;
1265  friend struct ConnmanTestMsg;
1266 };
1267 
1269 std::chrono::microseconds PoissonNextSend(std::chrono::microseconds now, std::chrono::seconds average_interval);
1270 
1272 void CaptureMessage(const CAddress& addr, const std::string& msg_type, const Span<const unsigned char>& data, bool is_incoming);
1273 
1275 {
1278  std::chrono::microseconds m_min_ping_time;
1280  int64_t nLastTXTime;
1284  uint64_t nKeyedNetGroup;
1288 };
1289 
1297 [[nodiscard]] std::optional<NodeId> SelectNodeToEvict(std::vector<NodeEvictionCandidate>&& vEvictionCandidates);
1298 
1320 void ProtectEvictionCandidatesByRatio(std::vector<NodeEvictionCandidate>& vEvictionCandidates);
1321 
1322 #endif // BITCOIN_NET_H
NodeEvictionCandidate::m_network
Network m_network
Definition: net.h:1287
V1TransportSerializer
Definition: net.h:387
CConnman::SetTryNewOutboundPeer
void SetTryNewOutboundPeer(bool flag)
Definition: net.cpp:1812
NodeId
int64_t NodeId
Definition: net.h:87
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:528
threadinterrupt.h
CNodeStats::m_last_ping_time
std::chrono::microseconds m_last_ping_time
Definition: net.h:262
CNode::IsOutboundOrBlockRelayConn
bool IsOutboundOrBlockRelayConn() const
Definition: net.h:460
CConnman::m_max_outbound
int m_max_outbound
Definition: net.h:1164
CConnman::m_anchors
std::vector< CAddress > m_anchors
Addresses that were saved during the previous clean shutdown.
Definition: net.h:1175
feerate.h
CConnman::ConnectNode
CNode * ConnectNode(CAddress addrConnect, const char *pszDest, bool fCountFailure, ConnectionType conn_type)
Definition: net.cpp:402
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:759
CConnman::vhListenSocket
std::vector< ListenSocket > vhListenSocket
Definition: net.h:1096
V1TransportDeserializer::Complete
bool Complete() const override
Definition: net.h:354
CNodeStats::fInbound
bool fInbound
Definition: net.h:253
CNode::GUARDED_BY
size_t nSendSize GUARDED_BY(cs_vSend)
Total size of all vSendMsg entries.
Definition: net.h:406
CConnman::NodesSnapshot::~NodesSnapshot
~NodesSnapshot()
Definition: net.h:1248
CConnman::ThreadMessageHandler
void ThreadMessageHandler()
Definition: net.cpp:2257
CNode::IsFeelerConn
bool IsFeelerConn() const
Definition: net.h:487
CNode::GetRefCount
int GetRefCount() const
Definition: net.h:593
assert
assert(!tx.IsCoinBase())
TransportDeserializer
The TransportDeserializer takes care of holding and deserializing the network receive buffer.
Definition: net.h:302
NetEventsInterface
Interface for message handling.
Definition: net.h:705
CConnman::Options::nMaxAddnode
int nMaxAddnode
Definition: net.h:750
NodeEvictionCandidate::m_min_ping_time
std::chrono::microseconds m_min_ping_time
Definition: net.h:1278
check.h
CNodeStats::m_network
Network m_network
Definition: net.h:272
CConnman::nSendBufferMaxSize
unsigned int nSendBufferMaxSize
Definition: net.h:1093
NetPermissionFlags::None
@ None
CConnman::AttemptToEvictConnection
bool AttemptToEvictConnection()
Try to find a connection to evict when the node is full.
Definition: net.cpp:1054
CNode::nLastSend
std::atomic< int64_t > nLastSend
Definition: net.h:423
CNode::cs_vSend
Mutex cs_vSend
Definition: net.h:411
CNodeStats::addrLocal
std::string addrLocal
Definition: net.h:266
CConnman::Interrupt
void Interrupt()
Definition: net.cpp:2638
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:1183
CConnman::nReceiveFloodSize
unsigned int nReceiveFloodSize
Definition: net.h:1094
CNode::GUARDED_BY
size_t nSendOffset GUARDED_BY(cs_vSend)
Offset inside the first vSendMsg already sent.
Definition: net.h:408
NodeEvictionCandidate::fBloomFilter
bool fBloomFilter
Definition: net.h:1283
CNodeStats::nodeid
NodeId nodeid
Definition: net.h:241
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:664
flags
int flags
Definition: bitcoin-tx.cpp:525
CConnman::ThreadDNSAddressSeed
void ThreadDNSAddressSeed()
Definition: net.cpp:1669
CNodeStats::nVersion
int nVersion
Definition: net.h:251
streams.h
CHash256::Reset
CHash256 & Reset()
Definition: hash.h:42
CConnman::Options::vBinds
std::vector< CService > vBinds
Definition: net.h:762
CSerializedNetMsg::data
std::vector< unsigned char > data
Definition: net.h:109
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 m_nodes membe...
Definition: net.cpp:1126
TransportDeserializer::GetMessage
virtual CNetMessage GetMessage(std::chrono::microseconds time, bool &reject_message)=0
CNode::nRefCount
std::atomic< int > nRefCount
Definition: net.h:454
CConnman::StartExtraBlockRelayPeers
void StartExtraBlockRelayPeers()
Definition: net.h:864
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:2908
CConnman::WakeMessageHandler
void WakeMessageHandler()
Definition: net.cpp:1660
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:2480
CConnman::Options::m_i2p_accept_incoming
bool m_i2p_accept_incoming
Definition: net.h:770
CNode::nProcessQueueSize
size_t nProcessQueueSize
Definition: net.h:417
sync.h
CConnman::m_max_outbound_full_relay
int m_max_outbound_full_relay
Definition: net.h:1156
CConnman::m_nodes_disconnected
std::list< CNode * > m_nodes_disconnected
Definition: net.h:1105
Discover
void Discover()
Definition: net.cpp:2398
CConnman::Options::nMaxOutboundLimit
uint64_t nMaxOutboundLimit
Definition: net.h:757
CNode::nLocalServices
const ServiceFlags nLocalServices
Services offered to this peer.
Definition: net.h:690
CNode::nLastRecv
std::atomic< int64_t > nLastRecv
Definition: net.h:424
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:1225
CNodeStats::mapRecvBytesPerMsgCmd
mapMsgCmdSize mapRecvBytesPerMsgCmd
Definition: net.h:260
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:2927
CConnman::ProcessAddrFetch
void ProcessAddrFetch()
Definition: net.cpp:1790
uint256.h
NodeEvictionCandidate::fRelayTxes
bool fRelayTxes
Definition: net.h:1282
DEFAULT_MAX_PEER_CONNECTIONS
static const unsigned int DEFAULT_MAX_PEER_CONNECTIONS
The maximum number of peer connections to maintain.
Definition: net.h:71
AddLocal
bool AddLocal(const CService &addr, int nScore=LOCAL_NONE)
Definition: net.cpp:250
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:393
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:766
CNode::GUARDED_BY
SOCKET hSocket GUARDED_BY(cs_hSocket)
DEFAULT_MAXRECEIVEBUFFER
static const size_t DEFAULT_MAXRECEIVEBUFFER
Definition: net.h:84
ProtectEvictionCandidatesByRatio
void ProtectEvictionCandidatesByRatio(std::vector< NodeEvictionCandidate > &vEvictionCandidates)
Protect desirable or disadvantaged inbound peers from eviction by ratio.
Definition: net.cpp:913
AddrMan
Stochastic address manager.
Definition: addrman.h:54
CConnman::Options::nLocalServices
ServiceFlags nLocalServices
Definition: net.h:746
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:1221
CNode::m_serializer
std::unique_ptr< TransportSerializer > m_serializer
Definition: net.h:400
CNetMessage::m_command
std::string m_command
Definition: net.h:288
CConnman::AcceptConnection
void AcceptConnection(const ListenSocket &hListenSocket)
Definition: net.cpp:1098
CConnman::Options::m_added_nodes
std::vector< std::string > m_added_nodes
Definition: net.h:769
CConnman::GetLocalServices
ServiceFlags GetLocalServices() const
Used to convey which local services we are offering peers during node connection.
Definition: net.cpp:2967
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:1077
CSerializedNetMsg::m_type
std::string m_type
Definition: net.h:110
CNodeStats::mapSendBytesPerMsgCmd
mapMsgCmdSize mapSendBytesPerMsgCmd
Definition: net.h:258
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:1117
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:3081
V1TransportDeserializer::vRecv
CDataStream vRecv
Definition: net.h:325
CConnman::ListenSocket::socket
SOCKET socket
Definition: net.h:950
CNode::m_permissionFlags
NetPermissionFlags m_permissionFlags
Definition: net.h:402
CNodeStats::nLastBlockTime
int64_t nLastBlockTime
Definition: net.h:247
CNode::nTimeOffset
std::atomic< int64_t > nTimeOffset
Definition: net.h:427
CNode::nServices
std::atomic< ServiceFlags > nServices
Definition: net.h:403
CNodeStats::nLastRecv
int64_t nLastRecv
Definition: net.h:245
CConnman::SocketEvents
void SocketEvents(const std::vector< CNode * > &nodes, std::set< SOCKET > &recv_set, std::set< SOCKET > &send_set, std::set< SOCKET > &error_set)
Check which sockets are ready for IO.
Definition: net.cpp:1447
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:3070
CNode::TxRelay::cs_filter
RecursiveMutex cs_filter
Definition: net.h:532
CConnman::Start
bool Start(CScheduler &scheduler, const Options &options)
Definition: net.cpp:2524
CConnman::CalculateKeyedNetGroup
uint64_t CalculateKeyedNetGroup(const CAddress &ad) const
Definition: net.cpp:3092
CNodeStats::addrBind
CAddress addrBind
Definition: net.h:270
V1TransportDeserializer::readData
int readData(Span< const uint8_t > msg_bytes)
Definition: net.cpp:716
Network
Network
A network type.
Definition: netaddress.h:45
CNodeStats::addr
CAddress addr
Definition: net.h:268
CConnman::GetTryNewOutboundPeer
bool GetTryNewOutboundPeer() const
Definition: net.cpp:1807
CConnman::StopThreads
void StopThreads()
Definition: net.cpp:2662
DEFAULT_FORCEDNSSEED
static constexpr bool DEFAULT_FORCEDNSSEED
Definition: net.h:81
CConnman::NotifyNumConnectionsChanged
void NotifyNumConnectionsChanged()
Definition: net.cpp:1305
LOCAL_MAX
@ LOCAL_MAX
Definition: net.h:195
CNode::fDisconnect
std::atomic_bool fDisconnect
Definition: net.h:452
V1TransportDeserializer::data_hash
uint256 data_hash
Definition: net.h:321
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:2913
NetPermissionFlags
NetPermissionFlags
Definition: net_permissions.h:18
CConnman::nPrevNodeCount
unsigned int nPrevNodeCount
Definition: net.h:1108
AddedNodeInfo::fConnected
bool fConnected
Definition: net.h:93
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:263
CConnman::AddAddrFetch
void AddAddrFetch(const std::string &strDest)
Definition: net.cpp:119
CConnman::InactivityCheck
bool InactivityCheck(const CNode &node) const
Return true if the peer is inactive and should be disconnected.
Definition: net.cpp:1325
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:1082
CConnman::m_client_interface
CClientUIInterface * m_client_interface
Definition: net.h:1166
CNode::addr
const CAddress addr
Definition: net.h:429
CConnman::GetNodeStats
void GetNodeStats(std::vector< CNodeStats > &vstats) const
Definition: net.cpp:2825
CConnman::OpenNetworkConnection
void OpenNetworkConnection(const CAddress &addrConnect, bool fCountFailure, CSemaphoreGrant *grantOutbound, const char *strDest, ConnectionType conn_type)
Definition: net.cpp:2222
ConnmanTestMsg
Definition: net.h:18
NodeEvictionCandidate::nKeyedNetGroup
uint64_t nKeyedNetGroup
Definition: net.h:1284
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:256
bloom.h
Span
A Span is an object that can refer to a contiguous sequence of objects.
Definition: span.h:96
CNode::nTimeConnected
const int64_t nTimeConnected
Unix epoch time at peer connection, in seconds.
Definition: net.h:426
Assume
#define Assume(val)
Assume is the identity function.
Definition: check.h:72
CConnman::FindNode
CNode * FindNode(const CNetAddr &ip)
Definition: net.cpp:327
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.
V1TransportDeserializer::hdr
CMessageHeader hdr
Definition: net.h:324
CConnman::GenerateSelectSet
bool GenerateSelectSet(const std::vector< CNode * > &nodes, std::set< SOCKET > &recv_set, std::set< SOCKET > &send_set, std::set< SOCKET > &error_set)
Generate a collection of sockets to check for IO readiness.
Definition: net.cpp:1356
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:1135
siphash.h
CSemaphoreGrant
RAII-style semaphore lock.
Definition: sync.h:309
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:61
CNodeStats::nTimeConnected
int64_t nTimeConnected
Definition: net.h:248
CConnman::CConnman
CConnman(uint64_t seed0, uint64_t seed1, AddrMan &addrman, bool network_active=true)
Definition: net.cpp:2464
random.h
CConnman::nMaxFeeler
int nMaxFeeler
Definition: net.h:1163
CNode::m_deserializer
std::unique_ptr< TransportDeserializer > m_deserializer
Definition: net.h:399
LOCAL_MAPPED
@ LOCAL_MAPPED
Definition: net.h:192
CConnman::mutexMsgProc
Mutex mutexMsgProc
Definition: net.h:1184
CNodeStats::m_mapped_as
uint32_t m_mapped_as
Definition: net.h:273
SeenLocal
bool SeenLocal(const CService &addr)
vote for a local address
Definition: net.cpp:310
TransportSerializer::~TransportSerializer
virtual ~TransportSerializer()
Definition: net.h:384
CConnman::nLocalServices
ServiceFlags nLocalServices
Services this instance offers.
Definition: net.h:1149
CConnman::ThreadSocketHandler
void ThreadSocketHandler()
Definition: net.cpp:1649
CConnman::ThreadOpenAddedConnections
void ThreadOpenAddedConnections()
Definition: net.cpp:2193
CNode::AddKnownTx
void AddKnownTx(const uint256 &hash)
Definition: net.h:635
V1TransportDeserializer::in_data
bool in_data
Definition: net.h:322
CConnman::m_addr_fetches_mutex
Mutex m_addr_fetches_mutex
Definition: net.h:1101
DEFAULT_MAXSENDBUFFER
static const size_t DEFAULT_MAXSENDBUFFER
Definition: net.h:85
NodeEvictionCandidate
Definition: net.h:1274
LOCAL_MANUAL
@ LOCAL_MANUAL
Definition: net.h:193
CNode::ConnectedThroughNetwork
Network ConnectedThroughNetwork() const
Get network the peer connected through.
Definition: net.cpp:568
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:261
CNodeStats::m_addr_name
std::string m_addr_name
Definition: net.h:250
CNode::cs_vRecv
Mutex cs_vRecv
Definition: net.h:413
CConnman::DumpAddresses
void DumpAddresses()
Definition: net.cpp:1780
CNode::TxRelay
Definition: net.h:531
CConnman::vWhitelistedRange
std::vector< NetWhitelistPermissions > vWhitelistedRange
Definition: net.h:1091
ip
static CService ip(uint32_t i)
Definition: denialofservice_tests.cpp:30
CConnman::addrman
AddrMan & addrman
Definition: net.h:1099
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:1217
CConnman::Options::vWhitelistedRange
std::vector< NetWhitelistPermissions > vWhitelistedRange
Definition: net.h:760
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std::string strAddedNode
Definition: net.h:91
CNode::GetCommonVersion
int GetCommonVersion() const
Definition: net.h:615
NodeEvictionCandidate::id
NodeId id
Definition: net.h:1276
CNode::AddRef
CNode * AddRef()
Definition: net.h:624
CConnman::NodesSnapshot
RAII helper to atomically create a copy of m_nodes and add a reference to each of the nodes.
Definition: net.h:1231
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size_t SocketSendData(CNode &node) const EXCLUSIVE_LOCKS_REQUIRED(node.cs_vSend)
Definition: net.cpp:791
CConnman::m_banman
BanMan * m_banman
Pointer to this node's banman.
Definition: net.h:1169
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:371
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:243
CConnman::threadOpenConnections
std::thread threadOpenConnections
Definition: net.h:1204
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:57
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CNode::m_conn_type
const ConnectionType m_conn_type
Definition: net.h:672
SelectNodeToEvict
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Select an inbound peer to evict after filtering out (protecting) peers having distinct,...
Definition: net.cpp:986
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bool ForNode(NodeId id, std::function< bool(CNode *pnode)> func)
Definition: net.cpp:3057
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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:290
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std::chrono::microseconds m_time
time of message receipt
Definition: net.h:285
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bool fInbound
Definition: net.h:94
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Definition: net.h:100
CNode::GUARDED_BY
uint64_t nRecvBytes GUARDED_BY(cs_vRecv)
Definition: net.h:421
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:763
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Cache responses to addr requests to minimize privacy leak.
Definition: net.h:1116
CConnman::GetNewNodeId
NodeId GetNewNodeId()
Definition: net.cpp:2474
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uint16_t GetListenPort()
Definition: net.cpp:125
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bool fAddressesInitialized
Definition: net.h:1098
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Definition: net.h:948
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V1TransportDeserializer(const CChainParams &chain_params, const NodeId node_id, int nTypeIn, int nVersionIn)
Definition: net.h:345
AddedNodeInfo
Definition: net.h:89
CConnman::Options::m_peer_connect_timeout
int64_t m_peer_connect_timeout
Definition: net.h:758
CAmount
int64_t CAmount
Amount in satoshis (Can be negative)
Definition: amount.h:12
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std::set< uint256 > setInventoryTxToSend
Definition: net.h:541
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CAmount minFeeFilter
Definition: net.h:264
CNode::m_bip152_highbandwidth_to
std::atomic< bool > m_bip152_highbandwidth_to
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TransportDeserializer::~TransportDeserializer
virtual ~TransportDeserializer()
Definition: net.h:312
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bool m_use_addrman_outgoing
Definition: net.h:767
CConnman::GetTotalBytesRecv
uint64_t GetTotalBytesRecv() const
Definition: net.cpp:2956
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virtual int Read(Span< const uint8_t > &msg_bytes)=0
read and deserialize data, advances msg_bytes data pointer
CConnman::SocketHandlerConnected
void SocketHandlerConnected(const std::vector< CNode * > &nodes, const std::set< SOCKET > &recv_set, const std::set< SOCKET > &send_set, const std::set< SOCKET > &error_set)
Do the read/write for connected sockets that are ready for IO.
Definition: net.cpp:1548
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static constexpr bool DEFAULT_FIXEDSEEDS
Definition: net.h:83
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int m_max_outbound_block_relay
Definition: net.h:749
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void Shuffle(I first, I last, R &&rng)
More efficient than using std::shuffle on a FastRandomContext.
Definition: random.h:231
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Definition: netaddress.h:475
CConnman::ListenSocket::AddSocketPermissionFlags
void AddSocketPermissionFlags(NetPermissionFlags &flags) const
Definition: net.h:951
V1TransportDeserializer::hasher
CHash256 hasher
Definition: net.h:320
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bool IsAddrFetchConn() const
Definition: net.h:491
CConnman::InitBinds
bool InitBinds(const Options &options)
Definition: net.cpp:2502
CConnman::SocketHandlerListening
void SocketHandlerListening(const std::set< SOCKET > &recv_set)
Accept incoming connections, one from each read-ready listening socket.
Definition: net.cpp:1637
CConnman::m_peer_connect_timeout
int64_t m_peer_connect_timeout
Definition: net.h:1087
CNode::cs_vProcessMsg
RecursiveMutex cs_vProcessMsg
Definition: net.h:415
CNode::cs_hSocket
Mutex cs_hSocket
Definition: net.h:412
CNodeStats::cleanSubVer
std::string cleanSubVer
Definition: net.h:252
CConnman::threadMessageHandler
std::thread threadMessageHandler
Definition: net.h:1205
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:67
CNetMessage::m_recv
CDataStream m_recv
received message data
Definition: net.h:284
cs_mapLocalHost
RecursiveMutex cs_mapLocalHost
Definition: net.cpp:114
LogPrint
#define LogPrint(category,...)
Definition: logging.h:191
CConnman::Options::nReceiveFloodSize
unsigned int nReceiveFloodSize
Definition: net.h:756
CNode::IsBlockOnlyConn
bool IsBlockOnlyConn() const
Definition: net.h:483
CConnman::nSeed0
const uint64_t nSeed0
SipHasher seeds for deterministic randomness.
Definition: net.h:1178
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:274
CConnman::~CConnman
~CConnman()
Definition: net.cpp:2728
CConnman::Options
Definition: net.h:744
CNode::GUARDED_BY
uint64_t nSendBytes GUARDED_BY(cs_vSend)
Definition: net.h:409
CConnman::GetReceiveFloodSize
unsigned int GetReceiveFloodSize() const
Definition: net.cpp:2972
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CSemaphoreGrant grantOutbound
Definition: net.h:453
CConnman::GetMaxOutboundTarget
uint64_t GetMaxOutboundTarget() const
Definition: net.cpp:2902
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:298
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:1286
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:747
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:244
CSerializedNetMsg::CSerializedNetMsg
CSerializedNetMsg()=default
BanMan
Definition: banman.h:58
CDataStream::resize
void resize(size_type n, value_type c=value_type{})
Definition: streams.h:257
CNodeStats::nTimeOffset
int64_t nTimeOffset
Definition: net.h:249
CConnman::Options::nSendBufferMaxSize
unsigned int nSendBufferMaxSize
Definition: net.h:755
CConnman::ListenSocket::m_permissions
NetPermissionFlags m_permissions
Definition: net.h:954
NodeEvictionCandidate::nTimeConnected
int64_t nTimeConnected
Definition: net.h:1277
CNode::nKeyedNetGroup
const uint64_t nKeyedNetGroup
Definition: net.h:456
CConnman::nLastNodeId
std::atomic< NodeId > nLastNodeId
Definition: net.h:1107
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:2797
fListen
bool fListen
Definition: net.cpp:113
CConnman::m_nodes_mutex
RecursiveMutex m_nodes_mutex
Definition: net.h:1106
V1TransportDeserializer::hdrbuf
CDataStream hdrbuf
Definition: net.h:323
CNode::IsManualConn
bool IsManualConn() const
Definition: net.h:479
CConnman::Options::uiInterface
CClientUIInterface * uiInterface
Definition: net.h:752
AddedNodeInfo::resolvedAddress
CService resolvedAddress
Definition: net.h:92
CConnman::GetExtraFullOutboundCount
int GetExtraFullOutboundCount() const
Definition: net.cpp:1824
fDiscover
bool fDiscover
Definition: net.cpp:112
CConnman::GUARDED_BY
uint64_t nTotalBytesSent GUARDED_BY(cs_totalBytesSent)
Definition: net.h:1079
CConnman::GetCurrentBlockRelayOnlyConns
std::vector< CAddress > GetCurrentBlockRelayOnlyConns() const
Return vector of current BLOCK_RELAY peers.
Definition: net.cpp:2126
CConnman::nSeed1
const uint64_t nSeed1
Definition: net.h:1178
CConnman
Definition: net.h:740
CConnman::threadI2PAcceptIncoming
std::thread threadI2PAcceptIncoming
Definition: net.h:1206
V1TransportDeserializer::Reset
void Reset()
Definition: net.h:333
CNode::id
const NodeId id
Definition: net.h:670
CConnman::Options::nMaxFeeler
int nMaxFeeler
Definition: net.h:751
CConnman::StopNodes
void StopNodes()
Definition: net.cpp:2679
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:1211
CNode::cs_sendProcessing
RecursiveMutex cs_sendProcessing
Definition: net.h:419
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:733
LocalServiceInfo::nScore
int nScore
Definition: net.h:228
GetLocal
bool GetLocal(CService &addr, const CNetAddr *paddrPeer=nullptr)
Definition: net.cpp:131
CNodeStats::nSendBytes
uint64_t nSendBytes
Definition: net.h:257
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:65
CMessageHeader
Message header.
Definition: protocol.h:30
CNodeStats::m_bip152_highbandwidth_to
bool m_bip152_highbandwidth_to
Definition: net.h:254
CConnman::SetNetworkActive
void SetNetworkActive(bool active)
Definition: net.cpp:2449
CNode::nLocalHostNonce
const uint64_t nLocalHostNonce
Definition: net.h:671
CConnman::NodeFullyConnected
static bool NodeFullyConnected(const CNode *pnode)
Definition: net.cpp:3011
CNodeStats::nLastTXTime
int64_t nLastTXTime
Definition: net.h:246
DEFAULT_WHITELISTRELAY
static const bool DEFAULT_WHITELISTRELAY
Default for -whitelistrelay.
Definition: net.h:46
LocalServiceInfo
Definition: net.h:227
ConnectionTypeAsString
std::string ConnectionTypeAsString(ConnectionType conn_type)
Convert ConnectionType enum to a string value.
Definition: net.cpp:533
NetPermissions::AddFlag
static void AddFlag(NetPermissionFlags &flags, NetPermissionFlags f)
Definition: net_permissions.h:58
CConnman::m_added_nodes_mutex
Mutex m_added_nodes_mutex
Definition: net.h:1103
CNetMessage::m_message_size
uint32_t m_message_size
size of the payload
Definition: net.h:286
CConnman::Options::m_msgproc
NetEventsInterface * m_msgproc
Definition: net.h:753
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:290
MAX_ADDNODE_CONNECTIONS
static const int MAX_ADDNODE_CONNECTIONS
Maximum number of addnode outgoing nodes.
Definition: net.h:63
CDataStream::clear
void clear()
Definition: streams.h:261
EXCLUSIVE_LOCKS_REQUIRED
#define EXCLUSIVE_LOCKS_REQUIRED(...)
Definition: threadsafety.h:49
LOCK
#define LOCK(cs)
Definition: sync.h:226
V1TransportDeserializer::SetVersion
void SetVersion(int nVersionIn) override
Definition: net.h:360
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:1838
CNetMessage::SetVersion
void SetVersion(int nVersionIn)
Definition: net.h:292
i2p.h
NetEventsInterface::FinalizeNode
virtual void FinalizeNode(const CNode &node)=0
Handle removal of a peer (clear state)
CConnman::ForEachNode
void ForEachNode(const NodeFn &func)
Definition: net.h:824
CNode::CloseSocketDisconnect
void CloseSocketDisconnect()
Definition: net.cpp:516
CNode::ConnectionTypeAsString
std::string ConnectionTypeAsString() const
Definition: net.h:661
V1TransportDeserializer
Definition: net.h:315
TransportSerializer
The TransportSerializer prepares messages for the network transport.
Definition: net.h:380
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:282
LOCAL_IF
@ LOCAL_IF
Definition: net.h:190
NodeEvictionCandidate::prefer_evict
bool prefer_evict
Definition: net.h:1285
DEFAULT_MAX_UPLOAD_TARGET
static const std::string DEFAULT_MAX_UPLOAD_TARGET
The default for -maxuploadtarget.
Definition: net.h:73
CNode::cs_addrLocal
RecursiveMutex cs_addrLocal
Definition: net.h:696
CConnman::SocketHandler
void SocketHandler()
Check connected and listening sockets for IO readiness and process them accordingly.
Definition: net.cpp:1525
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:553
CConnman::DisconnectNodes
void DisconnectNodes()
Definition: net.cpp:1255
mapMsgCmdSize
std::map< std::string, uint64_t > mapMsgCmdSize
Definition: net.h:236
FEELER_INTERVAL
static constexpr auto FEELER_INTERVAL
Run the feeler connection loop once every 2 minutes.
Definition: net.h:53
CConnman::GetAddedNodeInfo
std::vector< AddedNodeInfo > GetAddedNodeInfo() const
Definition: net.cpp:2139
NET_MESSAGE_COMMAND_OTHER
const std::string NET_MESSAGE_COMMAND_OTHER
Definition: net.cpp:104
CNode::CopyStats
void CopyStats(CNodeStats &stats)
Definition: net.cpp:575
CNode::GetLocalNonce
uint64_t GetLocalNonce() const
Definition: net.h:589
CNode::m_addr_name
const std::string m_addr_name
Definition: net.h:432
CConnman::nTotalBytesRecv
std::atomic< uint64_t > nTotalBytesRecv
Definition: net.h:1078
LocalServiceInfo::nPort
uint16_t nPort
Definition: net.h:229
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:768
CConnman::Stop
void Stop()
Definition: net.h:806
DEFAULT_PEER_CONNECT_TIMEOUT
static const int64_t DEFAULT_PEER_CONNECT_TIMEOUT
-peertimeout default
Definition: net.h:77
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:79
CConnman::AddNode
bool AddNode(const std::string &node)
Definition: net.cpp:2786
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:692
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:952
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:365
V1TransportSerializer::prepareForTransport
void prepareForTransport(CSerializedNetMsg &msg, std::vector< unsigned char > &header) override
Definition: net.cpp:778
CConnman::threadOpenAddedConnections
std::thread threadOpenAddedConnections
Definition: net.h:1203
CConnman::GetNetworkActive
bool GetNetworkActive() const
Definition: net.h:813
CConnman::GetUseAddrmanOutgoing
bool GetUseAddrmanOutgoing() const
Definition: net.h:814
CConnman::CachedAddrResponse::m_cache_entry_expiration
std::chrono::microseconds m_cache_entry_expiration
Definition: net.h:1118
CNode::SetAddrLocal
void SetAddrLocal(const CService &addrLocalIn)
May not be called more than once.
Definition: net.cpp:559
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:319
CConnman::NodeFn
std::function< void(CNode *)> NodeFn
Definition: net.h:823
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:748
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:1083
RemoveLocal
void RemoveLocal(const CService &addr)
Definition: net.cpp:283
LOCAL_NONE
@ LOCAL_NONE
Definition: net.h:189
CConnman::ShouldRunInactivityChecks
bool ShouldRunInactivityChecks(const CNode &node, int64_t secs_now) const
Return true if we should disconnect the peer for failing an inactivity check.
Definition: net.cpp:1320
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:631
CConnman::CConnmanTest
friend struct CConnmanTest
Definition: net.h:1264
CNodeStats::nRecvBytes
uint64_t nRecvBytes
Definition: net.h:259
CConnman::ThreadI2PAcceptIncoming
void ThreadI2PAcceptIncoming()
Definition: net.cpp:2298
ConnectionDirection
ConnectionDirection
Definition: netbase.h:32
DEFAULT_WHITELISTFORCERELAY
static const bool DEFAULT_WHITELISTFORCERELAY
Default for -whitelistforcerelay.
Definition: net.h:48
CConnman::ThreadOpenConnections
void ThreadOpenConnections(std::vector< std::string > connect)
Definition: net.cpp:1852
CConnman::semOutbound
std::unique_ptr< CSemaphore > semOutbound
Definition: net.h:1151
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:1152
CConnman::m_next_send_inv_to_incoming
std::atomic< std::chrono::microseconds > m_next_send_inv_to_incoming
Definition: net.h:1219
CConnman::GetTotalBytesSent
uint64_t GetTotalBytesSent() const
Definition: net.cpp:2961
CConnman::flagInterruptMsgProc
std::atomic< bool > flagInterruptMsgProc
Definition: net.h:1185
DEFAULT_BLOCKSONLY
static const bool DEFAULT_BLOCKSONLY
Default for blocks only.
Definition: net.h:75
CConnman::m_msgproc
NetEventsInterface * m_msgproc
Definition: net.h:1167
CConnman::threadDNSAddressSeed
std::thread threadDNSAddressSeed
Definition: net.h:1201
CConnman::Init
void Init(const Options &connOptions)
Definition: net.h:773
DEFAULT_DNSSEED
static constexpr bool DEFAULT_DNSSEED
Definition: net.h:82
LOCAL_BIND
@ LOCAL_BIND
Definition: net.h:191
CConnman::NodesSnapshot::Nodes
const std::vector< CNode * > & Nodes() const
Definition: net.h:1255
V1TransportDeserializer::m_chain_params
const CChainParams & m_chain_params
Definition: net.h:318
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:1199
CNode::IsFullOutboundConn
bool IsFullOutboundConn() const
Definition: net.h:475
CConnman::threadSocketHandler
std::thread threadSocketHandler
Definition: net.h:1202
CConnman::CheckIncomingNonce
bool CheckIncomingNonce(uint64_t nonce)
Definition: net.cpp:376
CConnman::m_max_outbound_block_relay
int m_max_outbound_block_relay
Definition: net.h:1160
CNode::m_greatest_common_version
std::atomic< int > m_greatest_common_version
Definition: net.h:673
CNode::TxRelay::GUARDED_BY
bool fSendMempool GUARDED_BY(cs_tx_inventory)
Definition: net.h:546
CConnman::NodesSnapshot::m_nodes_copy
std::vector< CNode * > m_nodes_copy
Definition: net.h:1261
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:120
TransportDeserializer::Complete
virtual bool Complete() const =0
IsLocal
bool IsLocal(const CService &addr)
check whether a given address is potentially local
Definition: net.cpp:321
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:108
CNodeStats::nServices
ServiceFlags nServices
Definition: net.h:242
CNodeStats
Definition: net.h:238
nonce
unsigned int nonce
Definition: miner_tests.cpp:54
V1TransportDeserializer::readHeader
int readHeader(Span< const uint8_t > msg_bytes)
Definition: net.cpp:676
strSubVersion
std::string strSubVersion
Subversion as sent to the P2P network in version messages.
Definition: net.cpp:117
GetLocalAddrForPeer
std::optional< CAddress > GetLocalAddrForPeer(CNode *pnode)
Returns a local address that we should advertise to this peer.
Definition: net.cpp:208
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:3099
MAX_SUBVERSION_LENGTH
static const unsigned int MAX_SUBVERSION_LENGTH
Maximum length of the user agent string in version message.
Definition: net.h:59
CConnman::m_use_addrman_outgoing
bool m_use_addrman_outgoing
Definition: net.h:1165
CConnman::AddWhitelistPermissionFlags
void AddWhitelistPermissionFlags(NetPermissionFlags &flags, const CNetAddr &addr) const
Definition: net.cpp:527
CConnman::NodesSnapshot::NodesSnapshot
NodesSnapshot(const CConnman &connman, bool shuffle)
Definition: net.h:1234
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std::vector< NetWhitebindPermissions > vWhiteBinds
Definition: net.h:761
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Definition: net.h:1097
CConnman::interruptNet
CThreadInterrupt interruptNet
This is signaled when network activity should cease.
Definition: net.h:1193
CNodeStats::m_bip152_highbandwidth_from
bool m_bip152_highbandwidth_from
Definition: net.h:255
CConnman::GetDeterministicRandomizer
CSipHasher GetDeterministicRandomizer(uint64_t id) const
Get a unique deterministic randomizer.
Definition: net.cpp:3087
CConnman::GetNodeCount
size_t GetNodeCount(ConnectionDirection) const
Definition: net.cpp:2809
CConnman::nMaxAddnode
int nMaxAddnode
Definition: net.h:1162
GUARDED_BY
std::map< CNetAddr, LocalServiceInfo > mapLocalHost GUARDED_BY(cs_mapLocalHost)
CConnman::nMaxConnections
int nMaxConnections
Definition: net.h:1153
FastRandomContext
Fast randomness source.
Definition: random.h:119
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:2734
CConnman::PushMessage
void PushMessage(CNode *pnode, CSerializedNetMsg &&msg)
Definition: net.cpp:3016
CNode::~CNode
~CNode()
Definition: net.cpp:3006
CConnman::BindListenPort
bool BindListenPort(const CService &bindAddr, bilingual_str &strError, NetPermissionFlags permissions)
Definition: net.cpp:2337
CNetMessage::m_raw_message_size
uint32_t m_raw_message_size
used wire size of the message (including header/checksum)
Definition: net.h:287
TIMEOUT_INTERVAL
static const int TIMEOUT_INTERVAL
Time after which to disconnect, after waiting for a ping response (or inactivity).
Definition: net.h:51
V1TransportDeserializer::nDataPos
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Definition: net.h:327
CConnman::Options::m_banman
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Definition: net.h:754
GetLocalAddress
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Definition: net.cpp:181
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:55
CSerializedNetMsg::operator=
CSerializedNetMsg & operator=(CSerializedNetMsg &&)=default
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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:2974
Span::subspan
CONSTEXPR_IF_NOT_DEBUG Span< C > subspan(std::size_t offset) const noexcept
Definition: span.h:194
V1TransportDeserializer::nHdrPos
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Definition: net.h:326
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:2885
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:2947
DEFAULT_LISTEN
static const bool DEFAULT_LISTEN
-listen default
Definition: net.h:69
SOCKET
unsigned int SOCKET
Definition: compat.h:41
V1TransportDeserializer::GetMessage
CNetMessage GetMessage(std::chrono::microseconds time, bool &reject_message) override
Definition: net.cpp:741
IsPeerAddrLocalGood
bool IsPeerAddrLocalGood(CNode *pnode)
Definition: net.cpp:201
NodeEvictionCandidate::nLastBlockTime
int64_t nLastBlockTime
Definition: net.h:1279
NodeEvictionCandidate::nLastTXTime
int64_t nLastTXTime
Definition: net.h:1280
CConnman::DeleteNode
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Definition: net.cpp:2721
CNode::addrBind
const CAddress addrBind
Definition: net.h:431
CConnman::ForEachNode
void ForEachNode(const NodeFn &func) const
Definition: net.h:833
NodeEvictionCandidate::fRelevantServices
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Definition: net.h:1281