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-rw-r--r--src/net_processing.h24
1 files changed, 22 insertions, 2 deletions
diff --git a/src/net_processing.h b/src/net_processing.h
index 79745cdd42..0a49972eed 100644
--- a/src/net_processing.h
+++ b/src/net_processing.h
@@ -8,6 +8,7 @@
#include "net.h"
#include "validationinterface.h"
+#include "consensus/params.h"
/** Default for -maxorphantx, maximum number of orphan transactions kept in memory */
static const unsigned int DEFAULT_MAX_ORPHAN_TRANSACTIONS = 100;
@@ -21,13 +22,25 @@ static const unsigned int DEFAULT_BLOCK_RECONSTRUCTION_EXTRA_TXN = 100;
* Timeout = base + per_header * (expected number of headers) */
static constexpr int64_t HEADERS_DOWNLOAD_TIMEOUT_BASE = 15 * 60 * 1000000; // 15 minutes
static constexpr int64_t HEADERS_DOWNLOAD_TIMEOUT_PER_HEADER = 1000; // 1ms/header
+/** Protect at least this many outbound peers from disconnection due to slow/
+ * behind headers chain.
+ */
+static constexpr int32_t MAX_OUTBOUND_PEERS_TO_PROTECT_FROM_DISCONNECT = 4;
+/** Timeout for (unprotected) outbound peers to sync to our chainwork, in seconds */
+static constexpr int64_t CHAIN_SYNC_TIMEOUT = 20 * 60; // 20 minutes
+/** How frequently to check for stale tips, in seconds */
+static constexpr int64_t STALE_CHECK_INTERVAL = 10 * 60; // 10 minutes
+/** How frequently to check for extra outbound peers and disconnect, in seconds */
+static constexpr int64_t EXTRA_PEER_CHECK_INTERVAL = 45;
+/** Minimum time an outbound-peer-eviction candidate must be connected for, in order to evict, in seconds */
+static constexpr int64_t MINIMUM_CONNECT_TIME = 30;
class PeerLogicValidation : public CValidationInterface, public NetEventsInterface {
private:
- CConnman* connman;
+ CConnman* const connman;
public:
- explicit PeerLogicValidation(CConnman* connman);
+ explicit PeerLogicValidation(CConnman* connman, CScheduler &scheduler);
void BlockConnected(const std::shared_ptr<const CBlock>& pblock, const CBlockIndex* pindexConnected, const std::vector<CTransactionRef>& vtxConflicted) override;
void UpdatedBlockTip(const CBlockIndex *pindexNew, const CBlockIndex *pindexFork, bool fInitialDownload) override;
@@ -47,6 +60,13 @@ public:
* @return True if there is more work to be done
*/
bool SendMessages(CNode* pto, std::atomic<bool>& interrupt) override;
+
+ void ConsiderEviction(CNode *pto, int64_t time_in_seconds);
+ void CheckForStaleTipAndEvictPeers(const Consensus::Params &consensusParams);
+ void EvictExtraOutboundPeers(int64_t time_in_seconds);
+
+private:
+ int64_t m_stale_tip_check_time; //! Next time to check for stale tip
};
struct CNodeStateStats {