Sami Ahmed
7ba8d8b8c9
Sync-freeze patch (original): - Backpressure ceiling HEADER_FRONT_MAX_AHEAD=8000 - PruneHeaders protects live sync window (nProtectFloor) - Hard-cap eviction from highest-height first - Bridge-repair getheaders from connected tip via PathReachesChain Additional fix: - Skip PoW check on PoS headers (nonce=0) in AddHeaderNode Block 1026 is PoS but within the 0-9000 PoW range — old code rejected valid PoS headers and severed the chain at height 1025 Verified: from-zero no-snapshot sync reached block 17k+ past the old 15k freeze zone. 132/132 unit tests pass.
60 lines
2.3 KiB
C++
60 lines
2.3 KiB
C++
// Copyright (c) 2026 The Triangles developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef TRIANGLES_SYNCMANAGER_H
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#define TRIANGLES_SYNCMANAGER_H
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#include "uint256.h"
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#include <cstddef>
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#include <cstdint>
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#include <vector>
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class CBlock;
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class CInv;
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class CNode;
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class CSyncManager
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{
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public:
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struct HeaderNode;
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static constexpr unsigned int HEADER_DOWNLOAD_WINDOW = 1024;
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static constexpr unsigned int HEADER_SYNC_LOW_WATER = HEADER_DOWNLOAD_WINDOW / 4;
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static constexpr unsigned int HEADER_SYNC_TARGET_INFLIGHT = HEADER_DOWNLOAD_WINDOW / 2;
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static constexpr int64_t HEADER_SYNC_REFILL_MIN_INTERVAL_SECONDS = 5;
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static constexpr int64_t HEADER_SYNC_CONTROL_INTERVAL_SECONDS = 5;
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static constexpr int64_t HEADER_SYNC_WATCHDOG_SECONDS = 25;
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bool HaveHeader(const uint256& hash) const;
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uint256 GetBestHeader() const;
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std::size_t GetHeaderCount() const;
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unsigned int CountInFlight() const;
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unsigned int GetPlannerDepth() const;
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int GetPlannerHeight() const;
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int64_t GetRequestTime(const uint256& hashBlock) const;
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bool RequestRefill(CNode* pfrom, uint256 hashTip, int64_t nMinIntervalSeconds, const char* pszReason);
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unsigned int RequestRefillAllPeers(uint256 hashTip, int64_t nMinIntervalSeconds, const char* pszReason);
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unsigned int QueueBlocksParallel(unsigned int nWindow = HEADER_DOWNLOAD_WINDOW);
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bool ProcessHeaders(CNode* pfrom, const std::vector<CBlock>& vHeaders);
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void BlockAccepted(const uint256& hashBlock);
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void TrackBlockDelivery(CNode* pfrom, const uint256& hashBlock);
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void Tick(CNode* pto, int nHighestInvWalk, const uint256& hashHighestInvWalk);
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private:
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uint256 GetHeaderTrust(unsigned int nBits) const;
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bool GetKnownHeaderState(const uint256& hash, int& nHeight, uint256& nChainTrust) const;
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bool GetPrevHash(const uint256& hash, uint256& hashPrev) const;
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void RecomputeBestHeader();
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void PruneHeaders();
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bool AddHeaderNode(const CBlock& header, const uint256& hashHeader);
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std::vector<uint256> GetDownloadPath(uint256 hashTip) const;
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bool PathReachesChain(const std::vector<uint256>& vPath) const;
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void ContinueHeaders(CNode* pfrom, const uint256& hashTip);
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};
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extern CSyncManager g_syncManager;
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#endif // TRIANGLES_SYNCMANAGER_H
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