diff options
Diffstat (limited to 'src/net_processing.h')
-rw-r--r-- | src/net_processing.h | 86 |
1 files changed, 76 insertions, 10 deletions
diff --git a/src/net_processing.h b/src/net_processing.h index 87eee566de..12a4e9c38f 100644 --- a/src/net_processing.h +++ b/src/net_processing.h @@ -32,10 +32,52 @@ static const bool DEFAULT_PEERBLOCKFILTERS = false; /** Threshold for marking a node to be discouraged, e.g. disconnected and added to the discouragement filter. */ static const int DISCOURAGEMENT_THRESHOLD{100}; +struct CNodeStateStats { + int m_misbehavior_score = 0; + int nSyncHeight = -1; + int nCommonHeight = -1; + std::vector<int> vHeightInFlight; +}; + +/** + * Data structure for an individual peer. This struct is not protected by + * cs_main since it does not contain validation-critical data. + * + * Memory is owned by shared pointers and this object is destructed when + * the refcount drops to zero. + * + * TODO: move most members from CNodeState to this structure. + * TODO: move remaining application-layer data members from CNode to this structure. + */ +struct Peer { + /** Same id as the CNode object for this peer */ + const NodeId m_id{0}; + + /** Protects misbehavior data members */ + Mutex m_misbehavior_mutex; + /** Accumulated misbehavior score for this peer */ + int m_misbehavior_score GUARDED_BY(m_misbehavior_mutex){0}; + /** Whether this peer should be disconnected and marked as discouraged (unless it has the noban permission). */ + bool m_should_discourage GUARDED_BY(m_misbehavior_mutex){false}; + + /** Set of txids to reconsider once their parent transactions have been accepted **/ + std::set<uint256> m_orphan_work_set GUARDED_BY(g_cs_orphans); + + /** Protects m_getdata_requests **/ + Mutex m_getdata_requests_mutex; + /** Work queue of items requested by this peer **/ + std::deque<CInv> m_getdata_requests GUARDED_BY(m_getdata_requests_mutex); + + explicit Peer(NodeId id) : m_id(id) {} +}; + +using PeerRef = std::shared_ptr<Peer>; + class PeerManager final : public CValidationInterface, public NetEventsInterface { public: PeerManager(const CChainParams& chainparams, CConnman& connman, BanMan* banman, - CScheduler& scheduler, ChainstateManager& chainman, CTxMemPool& pool); + CScheduler& scheduler, ChainstateManager& chainman, CTxMemPool& pool, + bool ignore_incoming_txs); /** * Overridden from CValidationInterface. @@ -94,7 +136,21 @@ public: */ void Misbehaving(const NodeId pnode, const int howmuch, const std::string& message); + /** Get statistics from node state */ + bool GetNodeStateStats(NodeId nodeid, CNodeStateStats& stats); + + /** Whether this node ignores txs received over p2p. */ + bool IgnoresIncomingTxs() {return m_ignore_incoming_txs;}; + private: + /** Get a shared pointer to the Peer object. + * May return an empty shared_ptr if the Peer object can't be found. */ + PeerRef GetPeerRef(NodeId id) const; + + /** Get a shared pointer to the Peer object and remove it from m_peer_map. + * May return an empty shared_ptr if the Peer object can't be found. */ + PeerRef RemovePeer(NodeId id); + /** * Potentially mark a node discouraged based on the contents of a BlockValidationState object * @@ -134,6 +190,9 @@ private: void AddTxAnnouncement(const CNode& node, const GenTxid& gtxid, std::chrono::microseconds current_time) EXCLUSIVE_LOCKS_REQUIRED(::cs_main); + /** Send a version message to a peer */ + void PushNodeVersion(CNode& pnode, int64_t nTime); + const CChainParams& m_chainparams; CConnman& m_connman; /** Pointer to this node's banman. May be nullptr - check existence before dereferencing. */ @@ -143,17 +202,24 @@ private: TxRequestTracker m_txrequest GUARDED_BY(::cs_main); int64_t m_stale_tip_check_time; //!< Next time to check for stale tip -}; -struct CNodeStateStats { - int m_misbehavior_score = 0; - int nSyncHeight = -1; - int nCommonHeight = -1; - std::vector<int> vHeightInFlight; -}; + //* Whether this node is running in blocks only mode */ + const bool m_ignore_incoming_txs; + + /** Whether we've completed initial sync yet, for determining when to turn + * on extra block-relay-only peers. */ + bool m_initial_sync_finished{false}; -/** Get statistics from node state */ -bool GetNodeStateStats(NodeId nodeid, CNodeStateStats &stats); + /** Protects m_peer_map */ + mutable Mutex m_peer_mutex; + /** + * Map of all Peer objects, keyed by peer id. This map is protected + * by the m_peer_mutex. Once a shared pointer reference is + * taken, the lock may be released. Individual fields are protected by + * their own locks. + */ + std::map<NodeId, PeerRef> m_peer_map GUARDED_BY(m_peer_mutex); +}; /** Relay transaction to every node */ void RelayTransaction(const uint256& txid, const uint256& wtxid, const CConnman& connman) EXCLUSIVE_LOCKS_REQUIRED(cs_main); |