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| -rw-r--r-- | src/net_processing.cpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/net_processing.cpp b/src/net_processing.cpp index f37312d155..f4ab3aa153 100644 --- a/src/net_processing.cpp +++ b/src/net_processing.cpp @@ -2357,6 +2357,23 @@ bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStr for (const CTransactionRef& removedTx : lRemovedTxn) AddToCompactExtraTransactions(removedTx); + // If a tx has been detected by recentRejects, we will have reached + // this point and the tx will have been ignored. Because we haven't run + // the tx through AcceptToMemoryPool, we won't have computed a DoS + // score for it or determined exactly why we consider it invalid. + // + // This means we won't penalize any peer subsequently relaying a DoSy + // tx (even if we penalized the first peer who gave it to us) because + // we have to account for recentRejects showing false positives. In + // other words, we shouldn't penalize a peer if we aren't *sure* they + // submitted a DoSy tx. + // + // Note that recentRejects doesn't just record DoSy or invalid + // transactions, but any tx not accepted by the mempool, which may be + // due to node policy (vs. consensus). So we can't blanket penalize a + // peer simply for relaying a tx that our recentRejects has caught, + // regardless of false positives. + int nDoS = 0; if (state.IsInvalid(nDoS)) { |