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-rw-r--r--src/net_processing.cpp111
1 files changed, 68 insertions, 43 deletions
diff --git a/src/net_processing.cpp b/src/net_processing.cpp
index 2f3a604064..0bc508980e 100644
--- a/src/net_processing.cpp
+++ b/src/net_processing.cpp
@@ -35,17 +35,34 @@
# error "Bitcoin cannot be compiled without assertions."
#endif
-std::atomic<int64_t> nTimeBestReceived(0); // Used only to inform the wallet of when we last received a block
-bool g_enable_bip61 = DEFAULT_ENABLE_BIP61;
-
-struct IteratorComparator
-{
- template<typename I>
- bool operator()(const I& a, const I& b) const
- {
- return &(*a) < &(*b);
- }
-};
+/** Expiration time for orphan transactions in seconds */
+static constexpr int64_t ORPHAN_TX_EXPIRE_TIME = 20 * 60;
+/** Minimum time between orphan transactions expire time checks in seconds */
+static constexpr int64_t ORPHAN_TX_EXPIRE_INTERVAL = 5 * 60;
+/** Headers download timeout expressed in microseconds
+ * 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;
+/** SHA256("main address relay")[0:8] */
+static constexpr uint64_t RANDOMIZER_ID_ADDRESS_RELAY = 0x3cac0035b5866b90ULL;
+/// Age after which a stale block will no longer be served if requested as
+/// protection against fingerprinting. Set to one month, denominated in seconds.
+static constexpr int STALE_RELAY_AGE_LIMIT = 30 * 24 * 60 * 60;
+/// Age after which a block is considered historical for purposes of rate
+/// limiting block relay. Set to one week, denominated in seconds.
+static constexpr int HISTORICAL_BLOCK_AGE = 7 * 24 * 60 * 60;
struct COrphanTx {
// When modifying, adapt the copy of this definition in tests/DoS_tests.
@@ -55,21 +72,11 @@ struct COrphanTx {
};
static CCriticalSection g_cs_orphans;
std::map<uint256, COrphanTx> mapOrphanTransactions GUARDED_BY(g_cs_orphans);
-std::map<COutPoint, std::set<std::map<uint256, COrphanTx>::iterator, IteratorComparator>> mapOrphanTransactionsByPrev GUARDED_BY(g_cs_orphans);
-void EraseOrphansFor(NodeId peer);
-
-static size_t vExtraTxnForCompactIt GUARDED_BY(g_cs_orphans) = 0;
-static std::vector<std::pair<uint256, CTransactionRef>> vExtraTxnForCompact GUARDED_BY(g_cs_orphans);
-static const uint64_t RANDOMIZER_ID_ADDRESS_RELAY = 0x3cac0035b5866b90ULL; // SHA256("main address relay")[0:8]
-
-/// Age after which a stale block will no longer be served if requested as
-/// protection against fingerprinting. Set to one month, denominated in seconds.
-static const int STALE_RELAY_AGE_LIMIT = 30 * 24 * 60 * 60;
+void EraseOrphansFor(NodeId peer);
-/// Age after which a block is considered historical for purposes of rate
-/// limiting block relay. Set to one week, denominated in seconds.
-static const int HISTORICAL_BLOCK_AGE = 7 * 24 * 60 * 60;
+/** Increase a node's misbehavior score. */
+void Misbehaving(NodeId nodeid, int howmuch, const std::string& message="");
// Internal stuff
namespace {
@@ -137,10 +144,24 @@ namespace {
MapRelay mapRelay;
/** Expiration-time ordered list of (expire time, relay map entry) pairs, protected by cs_main). */
std::deque<std::pair<int64_t, MapRelay::iterator>> vRelayExpiration;
+
+ std::atomic<int64_t> nTimeBestReceived(0); // Used only to inform the wallet of when we last received a block
+
+ struct IteratorComparator
+ {
+ template<typename I>
+ bool operator()(const I& a, const I& b) const
+ {
+ return &(*a) < &(*b);
+ }
+ };
+ std::map<COutPoint, std::set<std::map<uint256, COrphanTx>::iterator, IteratorComparator>> mapOrphanTransactionsByPrev GUARDED_BY(g_cs_orphans);
+
+ static size_t vExtraTxnForCompactIt GUARDED_BY(g_cs_orphans) = 0;
+ static std::vector<std::pair<uint256, CTransactionRef>> vExtraTxnForCompact GUARDED_BY(g_cs_orphans);
} // namespace
namespace {
-
struct CBlockReject {
unsigned char chRejectCode;
std::string strRejectReason;
@@ -267,10 +288,10 @@ struct CNodeState {
};
/** Map maintaining per-node state. Requires cs_main. */
-std::map<NodeId, CNodeState> mapNodeState;
+static std::map<NodeId, CNodeState> mapNodeState;
// Requires cs_main.
-CNodeState *State(NodeId pnode) {
+static CNodeState *State(NodeId pnode) {
std::map<NodeId, CNodeState>::iterator it = mapNodeState.find(pnode);
if (it == mapNodeState.end())
return nullptr;
@@ -809,7 +830,9 @@ static bool BlockRequestAllowed(const CBlockIndex* pindex, const Consensus::Para
(GetBlockProofEquivalentTime(*pindexBestHeader, *pindex, *pindexBestHeader, consensusParams) < STALE_RELAY_AGE_LIMIT);
}
-PeerLogicValidation::PeerLogicValidation(CConnman* connmanIn, CScheduler &scheduler) : connman(connmanIn), m_stale_tip_check_time(0) {
+PeerLogicValidation::PeerLogicValidation(CConnman* connmanIn, CScheduler &scheduler, bool enable_bip61)
+ : connman(connmanIn), m_stale_tip_check_time(0), m_enable_bip61(enable_bip61) {
+
// Initialize global variables that cannot be constructed at startup.
recentRejects.reset(new CRollingBloomFilter(120000, 0.000001));
@@ -866,7 +889,7 @@ static uint256 most_recent_block_hash;
static bool fWitnessesPresentInMostRecentCompactBlock;
/**
- * Maintain state about the best-seen block and fast-announce a compact block
+ * Maintain state about the best-seen block and fast-announce a compact block
* to compatible peers.
*/
void PeerLogicValidation::NewPoWValidBlock(const CBlockIndex *pindex, const std::shared_ptr<const CBlock>& pblock) {
@@ -911,7 +934,7 @@ void PeerLogicValidation::NewPoWValidBlock(const CBlockIndex *pindex, const std:
}
/**
- * Update our best height and announce any block hashes which weren't previously
+ * Update our best height and announce any block hashes which weren't previously
* in chainActive to our peers.
*/
void PeerLogicValidation::UpdatedBlockTip(const CBlockIndex *pindexNew, const CBlockIndex *pindexFork, bool fInitialDownload) {
@@ -947,7 +970,7 @@ void PeerLogicValidation::UpdatedBlockTip(const CBlockIndex *pindexNew, const CB
}
/**
- * Handle invalid block rejection and consequent peer banning, maintain which
+ * Handle invalid block rejection and consequent peer banning, maintain which
* peers announce compact blocks.
*/
void PeerLogicValidation::BlockChecked(const CBlock& block, const CValidationState& state) {
@@ -1534,7 +1557,7 @@ bool static ProcessHeadersMessage(CNode *pfrom, CConnman *connman, const std::ve
return true;
}
-bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStream& vRecv, int64_t nTimeReceived, const CChainParams& chainparams, CConnman* connman, const std::atomic<bool>& interruptMsgProc)
+bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStream& vRecv, int64_t nTimeReceived, const CChainParams& chainparams, CConnman* connman, const std::atomic<bool>& interruptMsgProc, bool enable_bip61)
{
LogPrint(BCLog::NET, "received: %s (%u bytes) peer=%d\n", SanitizeString(strCommand), vRecv.size(), pfrom->GetId());
if (gArgs.IsArgSet("-dropmessagestest") && GetRand(gArgs.GetArg("-dropmessagestest", 0)) == 0)
@@ -1588,7 +1611,7 @@ bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStr
// Each connection can only send one version message
if (pfrom->nVersion != 0)
{
- if (g_enable_bip61) {
+ if (enable_bip61) {
connman->PushMessage(pfrom, CNetMsgMaker(INIT_PROTO_VERSION).Make(NetMsgType::REJECT, strCommand, REJECT_DUPLICATE, std::string("Duplicate version message")));
}
LOCK(cs_main);
@@ -1619,7 +1642,7 @@ bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStr
if (!pfrom->fInbound && !pfrom->fFeeler && !pfrom->m_manual_connection && !HasAllDesirableServiceFlags(nServices))
{
LogPrint(BCLog::NET, "peer=%d does not offer the expected services (%08x offered, %08x expected); disconnecting\n", pfrom->GetId(), nServices, GetDesirableServiceFlags(nServices));
- if (g_enable_bip61) {
+ if (enable_bip61) {
connman->PushMessage(pfrom, CNetMsgMaker(INIT_PROTO_VERSION).Make(NetMsgType::REJECT, strCommand, REJECT_NONSTANDARD,
strprintf("Expected to offer services %08x", GetDesirableServiceFlags(nServices))));
}
@@ -1642,7 +1665,7 @@ bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStr
{
// disconnect from peers older than this proto version
LogPrint(BCLog::NET, "peer=%d using obsolete version %i; disconnecting\n", pfrom->GetId(), nVersion);
- if (g_enable_bip61) {
+ if (enable_bip61) {
connman->PushMessage(pfrom, CNetMsgMaker(INIT_PROTO_VERSION).Make(NetMsgType::REJECT, strCommand, REJECT_OBSOLETE,
strprintf("Version must be %d or greater", MIN_PEER_PROTO_VERSION)));
}
@@ -2340,7 +2363,7 @@ bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStr
LogPrint(BCLog::MEMPOOLREJ, "%s from peer=%d was not accepted: %s\n", tx.GetHash().ToString(),
pfrom->GetId(),
FormatStateMessage(state));
- if (g_enable_bip61 && state.GetRejectCode() > 0 && state.GetRejectCode() < REJECT_INTERNAL) { // Never send AcceptToMemoryPool's internal codes over P2P
+ if (enable_bip61 && state.GetRejectCode() > 0 && state.GetRejectCode() < REJECT_INTERNAL) { // Never send AcceptToMemoryPool's internal codes over P2P
connman->PushMessage(pfrom, msgMaker.Make(NetMsgType::REJECT, strCommand, (unsigned char)state.GetRejectCode(),
state.GetRejectReason().substr(0, MAX_REJECT_MESSAGE_LENGTH), inv.hash));
}
@@ -2525,7 +2548,7 @@ bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStr
} // cs_main
if (fProcessBLOCKTXN)
- return ProcessMessage(pfrom, NetMsgType::BLOCKTXN, blockTxnMsg, nTimeReceived, chainparams, connman, interruptMsgProc);
+ return ProcessMessage(pfrom, NetMsgType::BLOCKTXN, blockTxnMsg, nTimeReceived, chainparams, connman, interruptMsgProc, enable_bip61);
if (fRevertToHeaderProcessing) {
// Headers received from HB compact block peers are permitted to be
@@ -2911,12 +2934,12 @@ bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStr
return true;
}
-static bool SendRejectsAndCheckIfBanned(CNode* pnode, CConnman* connman)
+static bool SendRejectsAndCheckIfBanned(CNode* pnode, CConnman* connman, bool enable_bip61)
{
AssertLockHeld(cs_main);
CNodeState &state = *State(pnode->GetId());
- if (g_enable_bip61) {
+ if (enable_bip61) {
for (const CBlockReject& reject : state.rejects) {
connman->PushMessage(pnode, CNetMsgMaker(INIT_PROTO_VERSION).Make(NetMsgType::REJECT, std::string(NetMsgType::BLOCK), reject.chRejectCode, reject.strRejectReason, reject.hashBlock));
}
@@ -3018,7 +3041,7 @@ bool PeerLogicValidation::ProcessMessages(CNode* pfrom, std::atomic<bool>& inter
bool fRet = false;
try
{
- fRet = ProcessMessage(pfrom, strCommand, vRecv, msg.nTime, chainparams, connman, interruptMsgProc);
+ fRet = ProcessMessage(pfrom, strCommand, vRecv, msg.nTime, chainparams, connman, interruptMsgProc, m_enable_bip61);
if (interruptMsgProc)
return false;
if (!pfrom->vRecvGetData.empty())
@@ -3026,7 +3049,7 @@ bool PeerLogicValidation::ProcessMessages(CNode* pfrom, std::atomic<bool>& inter
}
catch (const std::ios_base::failure& e)
{
- if (g_enable_bip61) {
+ if (m_enable_bip61) {
connman->PushMessage(pfrom, CNetMsgMaker(INIT_PROTO_VERSION).Make(NetMsgType::REJECT, strCommand, REJECT_MALFORMED, std::string("error parsing message")));
}
if (strstr(e.what(), "end of data"))
@@ -3060,7 +3083,7 @@ bool PeerLogicValidation::ProcessMessages(CNode* pfrom, std::atomic<bool>& inter
}
LOCK(cs_main);
- SendRejectsAndCheckIfBanned(pfrom, connman);
+ SendRejectsAndCheckIfBanned(pfrom, connman, m_enable_bip61);
return fMoreWork;
}
@@ -3195,6 +3218,7 @@ void PeerLogicValidation::CheckForStaleTipAndEvictPeers(const Consensus::Params
}
}
+namespace {
class CompareInvMempoolOrder
{
CTxMemPool *mp;
@@ -3211,6 +3235,7 @@ public:
return mp->CompareDepthAndScore(*b, *a);
}
};
+}
bool PeerLogicValidation::SendMessages(CNode* pto)
{
@@ -3256,7 +3281,7 @@ bool PeerLogicValidation::SendMessages(CNode* pto)
if (!lockMain)
return true;
- if (SendRejectsAndCheckIfBanned(pto, connman))
+ if (SendRejectsAndCheckIfBanned(pto, connman, m_enable_bip61))
return true;
CNodeState &state = *State(pto->GetId());
generated by cgit v1.2.3 (git 2.26.2) at 2024-10-31 16:28:20 +0000