diff options
author | Troy Giorshev <troygiorshev@gmail.com> | 2020-08-12 11:04:29 -0400 |
---|---|---|
committer | Troy Giorshev <troygiorshev@gmail.com> | 2020-10-27 06:07:41 -0400 |
commit | d419fdedbe34c7ea19c0473660cc1b486b4e70d8 (patch) | |
tree | 18fe9004205217b5abb80415631e639aff3eace6 /src | |
parent | 55b1ffcd259cc64139dad646a52fab5c597c95c2 (diff) | |
download | bitcoin-d419fdedbe34c7ea19c0473660cc1b486b4e70d8.tar.xz |
[net processing] Don't add AlreadyHave txs to recentRejects
Now, we only add a transaction to our recentRejects filter if we didn't
already have it, meaning that it is added at most once, as intended.
Diffstat (limited to 'src')
-rw-r--r-- | src/net_processing.cpp | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/src/net_processing.cpp b/src/net_processing.cpp index 94d4052fa1..464e3de80a 100644 --- a/src/net_processing.cpp +++ b/src/net_processing.cpp @@ -2946,13 +2946,9 @@ void PeerManager::ProcessMessage(CNode& pfrom, const std::string& msg_type, CDat pfrom.AddKnownTx(txid); } - TxValidationState state; - m_txrequest.ReceivedResponse(pfrom.GetId(), txid); if (tx.HasWitness()) m_txrequest.ReceivedResponse(pfrom.GetId(), wtxid); - std::list<CTransactionRef> lRemovedTxn; - // We do the AlreadyHaveTx() check using wtxid, rather than txid - in the // absence of witness malleation, this is strictly better, because the // recent rejects filter may contain the wtxid but rarely contains @@ -2965,8 +2961,25 @@ void PeerManager::ProcessMessage(CNode& pfrom, const std::string& msg_type, CDat // already; and an adversary can already relay us old transactions // (older than our recency filter) if trying to DoS us, without any need // for witness malleation. - if (!AlreadyHaveTx(GenTxid(/* is_wtxid=*/true, wtxid), m_mempool) && - AcceptToMemoryPool(m_mempool, state, ptx, &lRemovedTxn, false /* bypass_limits */)) { + if (AlreadyHaveTx(GenTxid(/* is_wtxid=*/true, wtxid), m_mempool)) { + if (pfrom.HasPermission(PF_FORCERELAY)) { + // Always relay transactions received from peers with forcerelay + // permission, even if they were already in the mempool, allowing + // the node to function as a gateway for nodes hidden behind it. + if (!m_mempool.exists(tx.GetHash())) { + LogPrintf("Not relaying non-mempool transaction %s from forcerelay peer=%d\n", tx.GetHash().ToString(), pfrom.GetId()); + } else { + LogPrintf("Force relaying tx %s from peer=%d\n", tx.GetHash().ToString(), pfrom.GetId()); + RelayTransaction(tx.GetHash(), tx.GetWitnessHash(), m_connman); + } + } + return; + } + + TxValidationState state; + std::list<CTransactionRef> lRemovedTxn; + + if (AcceptToMemoryPool(m_mempool, state, ptx, &lRemovedTxn, false /* bypass_limits */)) { m_mempool.check(&::ChainstateActive().CoinsTip()); // As this version of the transaction was acceptable, we can forget about any // requests for it. @@ -3088,19 +3101,6 @@ void PeerManager::ProcessMessage(CNode& pfrom, const std::string& msg_type, CDat AddToCompactExtraTransactions(ptx); } } - - if (pfrom.HasPermission(PF_FORCERELAY)) { - // Always relay transactions received from peers with forcerelay permission, even - // if they were already in the mempool, - // allowing the node to function as a gateway for - // nodes hidden behind it. - if (!m_mempool.exists(tx.GetHash())) { - LogPrintf("Not relaying non-mempool transaction %s from forcerelay peer=%d\n", tx.GetHash().ToString(), pfrom.GetId()); - } else { - LogPrintf("Force relaying tx %s from peer=%d\n", tx.GetHash().ToString(), pfrom.GetId()); - RelayTransaction(tx.GetHash(), tx.GetWitnessHash(), m_connman); - } - } } // If a tx has been detected by recentRejects, we will have reached |