diff options
| author | Anthony Towns <aj@erisian.com.au> | 2019-09-10 18:00:17 +1000 |
|---|---|---|
| committer | Anthony Towns <aj@erisian.com.au> | 2019-10-23 11:36:24 +1000 |
| commit | 168b781fe7f3f13b24c52a151f36de4cdd0a340a (patch) | |
| tree | 67cb17dcacd0211ca372a5355f983290e516b65a /src | |
| parent | a689c119076c7b8dc5b4dea4539e4cbf5adfb72f (diff) | |
Continue relaying transactions after they expire from mapRelay
Diffstat (limited to 'src')
| -rw-r--r-- | src/net_processing.cpp | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/src/net_processing.cpp b/src/net_processing.cpp index e345af604c..e5f101758c 100644 --- a/src/net_processing.cpp +++ b/src/net_processing.cpp @@ -39,6 +39,8 @@ 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; +/** How long to cache transactions in mapRelay for normal relay */ +static constexpr std::chrono::seconds RELAY_TX_CACHE_TIME{15 * 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 @@ -1522,6 +1524,10 @@ void static ProcessGetData(CNode* pfrom, const CChainParams& chainparams, CConnm // messages from this peer (likely resulting in our peer eventually // disconnecting us). if (pfrom->m_tx_relay != nullptr) { + // mempool entries added before this time have likely expired from mapRelay + const std::chrono::seconds longlived_mempool_time = GetTime<std::chrono::seconds>() - RELAY_TX_CACHE_TIME; + const std::chrono::seconds mempool_req = pfrom->m_tx_relay->m_last_mempool_req.load(); + LOCK(cs_main); while (it != pfrom->vRecvGetData.end() && (it->type == MSG_TX || it->type == MSG_WITNESS_TX)) { @@ -1541,11 +1547,15 @@ void static ProcessGetData(CNode* pfrom, const CChainParams& chainparams, CConnm if (mi != mapRelay.end()) { connman->PushMessage(pfrom, msgMaker.Make(nSendFlags, NetMsgType::TX, *mi->second)); push = true; - } else if (pfrom->m_tx_relay->m_last_mempool_req.load().count()) { + } else { auto txinfo = mempool.info(inv.hash); // To protect privacy, do not answer getdata using the mempool when - // that TX couldn't have been INVed in reply to a MEMPOOL request. - if (txinfo.tx && txinfo.m_time <= pfrom->m_tx_relay->m_last_mempool_req.load()) { + // that TX couldn't have been INVed in reply to a MEMPOOL request, + // or when it's too recent to have expired from mapRelay. + if (txinfo.tx && ( + (mempool_req.count() && txinfo.m_time <= mempool_req) + || (txinfo.m_time <= longlived_mempool_time))) + { connman->PushMessage(pfrom, msgMaker.Make(nSendFlags, NetMsgType::TX, *txinfo.tx)); push = true; } @@ -3931,7 +3941,7 @@ bool PeerLogicValidation::SendMessages(CNode* pto) auto ret = mapRelay.insert(std::make_pair(hash, std::move(txinfo.tx))); if (ret.second) { - vRelayExpiration.push_back(std::make_pair(nNow + 15 * 60 * 1000000, ret.first)); + vRelayExpiration.push_back(std::make_pair(nNow + std::chrono::microseconds{RELAY_TX_CACHE_TIME}.count(), ret.first)); } } if (vInv.size() == MAX_INV_SZ) { |