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@ -6,19 +6,13 @@
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#ifndef BITCOIN_NET_PROCESSING_H
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#define BITCOIN_NET_PROCESSING_H
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#include <consensus/params.h>
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#include <net.h>
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#include <sync.h>
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#include <txrequest.h>
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#include <validationinterface.h>
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class BlockTransactionsRequest;
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class BlockValidationState;
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class CBlockHeader;
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class CChainParams;
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class CTxMemPool;
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class ChainstateManager;
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class TxValidationState;
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extern RecursiveMutex cs_main;
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extern RecursiveMutex g_cs_orphans;
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@ -129,129 +123,6 @@ public:
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const std::chrono::microseconds time_received, const std::atomic<bool>& interruptMsgProc) = 0;
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};
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class PeerManagerImpl final : public PeerManager
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{
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public:
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PeerManagerImpl(const CChainParams& chainparams, CConnman& connman, BanMan* banman,
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CScheduler& scheduler, ChainstateManager& chainman, CTxMemPool& pool,
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bool ignore_incoming_txs);
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/** Overridden from CValidationInterface. */
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void BlockConnected(const std::shared_ptr<const CBlock>& pblock, const CBlockIndex* pindexConnected) override;
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void BlockDisconnected(const std::shared_ptr<const CBlock> &block, const CBlockIndex* pindex) override;
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void UpdatedBlockTip(const CBlockIndex *pindexNew, const CBlockIndex *pindexFork, bool fInitialDownload) override;
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void BlockChecked(const CBlock& block, const BlockValidationState& state) override;
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void NewPoWValidBlock(const CBlockIndex *pindex, const std::shared_ptr<const CBlock>& pblock) override;
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/** Implement NetEventsInterface */
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void InitializeNode(CNode* pnode) override;
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void FinalizeNode(const CNode& node, bool& fUpdateConnectionTime) override;
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bool ProcessMessages(CNode* pfrom, std::atomic<bool>& interrupt) override;
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bool SendMessages(CNode* pto) override EXCLUSIVE_LOCKS_REQUIRED(pto->cs_sendProcessing);
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/** Implement PeerManager */
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void CheckForStaleTipAndEvictPeers() override;
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bool GetNodeStateStats(NodeId nodeid, CNodeStateStats& stats) override;
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bool IgnoresIncomingTxs() override { return m_ignore_incoming_txs; }
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void SetBestHeight(int height) override { m_best_height = height; };
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void Misbehaving(const NodeId pnode, const int howmuch, const std::string& message) override;
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void ProcessMessage(CNode& pfrom, const std::string& msg_type, CDataStream& vRecv,
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const std::chrono::microseconds time_received, const std::atomic<bool>& interruptMsgProc) override;
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private:
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/** Consider evicting an outbound peer based on the amount of time they've been behind our tip */
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void ConsiderEviction(CNode& pto, int64_t time_in_seconds) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
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/** If we have extra outbound peers, try to disconnect the one with the oldest block announcement */
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void EvictExtraOutboundPeers(int64_t time_in_seconds) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
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/** Retrieve unbroadcast transactions from the mempool and reattempt sending to peers */
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void ReattemptInitialBroadcast(CScheduler& scheduler) const;
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/** Get a shared pointer to the Peer object.
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* May return an empty shared_ptr if the Peer object can't be found. */
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PeerRef GetPeerRef(NodeId id) const;
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/** Get a shared pointer to the Peer object and remove it from m_peer_map.
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* May return an empty shared_ptr if the Peer object can't be found. */
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PeerRef RemovePeer(NodeId id);
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/**
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* Potentially mark a node discouraged based on the contents of a BlockValidationState object
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*
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* @param[in] via_compact_block this bool is passed in because net_processing should
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* punish peers differently depending on whether the data was provided in a compact
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* block message or not. If the compact block had a valid header, but contained invalid
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* txs, the peer should not be punished. See BIP 152.
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*
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* @return Returns true if the peer was punished (probably disconnected)
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*/
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bool MaybePunishNodeForBlock(NodeId nodeid, const BlockValidationState& state,
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bool via_compact_block, const std::string& message = "");
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/**
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* Potentially disconnect and discourage a node based on the contents of a TxValidationState object
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*
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* @return Returns true if the peer was punished (probably disconnected)
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*/
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bool MaybePunishNodeForTx(NodeId nodeid, const TxValidationState& state, const std::string& message = "");
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/** Maybe disconnect a peer and discourage future connections from its address.
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*
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* @param[in] pnode The node to check.
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* @return True if the peer was marked for disconnection in this function
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*/
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bool MaybeDiscourageAndDisconnect(CNode& pnode);
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void ProcessOrphanTx(std::set<uint256>& orphan_work_set) EXCLUSIVE_LOCKS_REQUIRED(cs_main, g_cs_orphans);
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/** Process a single headers message from a peer. */
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void ProcessHeadersMessage(CNode& pfrom, const Peer& peer,
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const std::vector<CBlockHeader>& headers,
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bool via_compact_block);
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void SendBlockTransactions(CNode& pfrom, const CBlock& block, const BlockTransactionsRequest& req);
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/** Register with TxRequestTracker that an INV has been received from a
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* peer. The announcement parameters are decided in PeerManager and then
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* passed to TxRequestTracker. */
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void AddTxAnnouncement(const CNode& node, const GenTxid& gtxid, std::chrono::microseconds current_time)
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EXCLUSIVE_LOCKS_REQUIRED(::cs_main);
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/** Send a version message to a peer */
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void PushNodeVersion(CNode& pnode, int64_t nTime);
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const CChainParams& m_chainparams;
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CConnman& m_connman;
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/** Pointer to this node's banman. May be nullptr - check existence before dereferencing. */
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BanMan* const m_banman;
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ChainstateManager& m_chainman;
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CTxMemPool& m_mempool;
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TxRequestTracker m_txrequest GUARDED_BY(::cs_main);
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/** The height of the best chain */
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std::atomic<int> m_best_height{-1};
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int64_t m_stale_tip_check_time; //!< Next time to check for stale tip
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/** Whether this node is running in blocks only mode */
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const bool m_ignore_incoming_txs;
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/** Whether we've completed initial sync yet, for determining when to turn
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* on extra block-relay-only peers. */
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bool m_initial_sync_finished{false};
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/** Protects m_peer_map. This mutex must not be locked while holding a lock
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* on any of the mutexes inside a Peer object. */
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mutable Mutex m_peer_mutex;
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/**
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* Map of all Peer objects, keyed by peer id. This map is protected
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* by the m_peer_mutex. Once a shared pointer reference is
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* taken, the lock may be released. Individual fields are protected by
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* their own locks.
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*/
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std::map<NodeId, PeerRef> m_peer_map GUARDED_BY(m_peer_mutex);
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};
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/** Relay transaction to every node */
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void RelayTransaction(const uint256& txid, const uint256& wtxid, const CConnman& connman) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
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Anthony Towns
4 years ago