mirrors/bitcoin
1
0
Fork 0
mirror of https://github.com/bitcoin/bitcoin.git synced 2025-01-19 05:45:05 +01:00
Code Issues Projects Releases Wiki Activity

[p2p] don't find 1p1cs for reconsiderable txns that are AlreadyHaveTx

Browse Source 
This is a slight behavior change: if a transaction is in both
reconsiderable rejects and AlreadyHaveTx in another way, we don't try to
return a 1p1c package. This is the correct thing to do, as we don't want
to reconsider transactions that have multiple things wrong with them.
For example, if a transaction is low feerate, and then later found to
have a bad signature, we shouldn't try it again in a package.
This commit is contained in:
glozow 2024-09-17 19:26:57 -04:00
parent fa7027d0fc
commit 2266eba43a
1 changed files with 9 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
src/node/txdownloadman_impl.cpp
View File

@ -477,17 +477,7 @@ std::pair<bool, std::optional<PackageToValidate>> TxDownloadManagerImpl::Receive
// 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::Wtxid(wtxid), /*include_reconsiderable=*/true)) {
if (RecentRejectsReconsiderableFilter().contains(wtxid)) {
// When a transaction is already in m_lazy_recent_rejects_reconsiderable, we shouldn't submit
// it by itself again. However, look for a matching child in the orphanage, as it is
// possible that they succeed as a package.
LogDebug(BCLog::TXPACKAGES, "found tx %s (wtxid=%s) in reconsiderable rejects, looking for child in orphanage\n",
txid.ToString(), wtxid.ToString());
return std::make_pair(false, Find1P1CPackage(ptx, nodeid));
}
if (AlreadyHaveTx(GenTxid::Wtxid(wtxid), /*include_reconsiderable=*/false)) {
// If a tx is detected by m_lazy_recent_rejects it is ignored. Because we haven't
// submitted the tx to our mempool, we won't have computed a DoS
// score for it or determined exactly why we consider it invalid.
@ -504,8 +494,16 @@ std::pair<bool, std::optional<PackageToValidate>> TxDownloadManagerImpl::Receive
// peer simply for relaying a tx that our m_lazy_recent_rejects has caught,
// regardless of false positives.
return {false, std::nullopt};
} else if (RecentRejectsReconsiderableFilter().contains(wtxid)) {
// When a transaction is already in m_lazy_recent_rejects_reconsiderable, we shouldn't submit
// it by itself again. However, look for a matching child in the orphanage, as it is
// possible that they succeed as a package.
LogDebug(BCLog::TXPACKAGES, "found tx %s (wtxid=%s) in reconsiderable rejects, looking for child in orphanage\n",
txid.ToString(), wtxid.ToString());
return {false, Find1P1CPackage(ptx, nodeid)};
}
return {true, std::nullopt};
}