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Less tolerance to lagging nodes

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Ban nodes that are 5 or more Monero blocks behind.
This commit is contained in:
SChernykh 2021-08-24 17:19:10 +02:00
parent 327d1455fe
commit 20b3886bfb
1 changed files with 23 additions and 4 deletions
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25
src/p2p_server.cpp
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@ -1212,11 +1212,30 @@ bool P2PServer::P2PClient::on_block_broadcast(const uint8_t* buf, uint32_t size)
m_broadcastedHashes.insert(server->m_block->m_sidechainId); m_broadcastedHashes.insert(server->m_block->m_sidechainId);
} }
if ((server->m_block->m_prevId != server->m_pool->miner_data().prev_id) && if (server->m_block->m_prevId != server->m_pool->miner_data().prev_id) {
(server->m_block->m_txinGenHeight < server->m_pool->miner_data().height)){ // This peer is mining on top of a different Monero block, investigate it
LOGINFO(4, "peer " << static_cast<char*>(m_addrString) << " broadcasted a stale block (mainchain height " << server->m_block->m_txinGenHeight << ", expected >= " << server->m_pool->miner_data().height << "), ignoring it"); const uint64_t peer_height = server->m_block->m_txinGenHeight;
const uint64_t our_height = server->m_pool->miner_data().height;
if (peer_height < our_height) {
if (our_height - peer_height < 5) {
LOGINFO(4, "peer " << static_cast<char*>(m_addrString) << " broadcasted a stale block (mainchain height " << peer_height << ", expected >= " << our_height << "), ignoring it");
return true; return true;
} }
else {
LOGWARN(4, "peer " << static_cast<char*>(m_addrString) << " broadcasted an unreasonably stale block (mainchain height " << peer_height << ", expected >= " << our_height << ')');
return false;
}
}
else if (peer_height > our_height) {
LOGWARN(4, "peer " << static_cast<char*>(m_addrString) << " is ahead on mainchain (height " << peer_height << ", your height " << our_height << "). Is your monerod stuck or lagging?");
return true;
}
else {
LOGINFO(4, "peer " << static_cast<char*>(m_addrString) << " is mining on an alternative mainchain tip (height " << peer_height << "), ignoring it");
return true;
}
}
server->m_block->m_wantBroadcast = true; server->m_block->m_wantBroadcast = true;