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Limit max number of transactions in block template

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Because if it's too high, it won't fit into p2p packet
This commit is contained in:
SChernykh 2021-08-24 20:54:02 +02:00
parent 6de98697a1
commit 64885852dd
1 changed files with 12 additions and 0 deletions
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12
src/block_template.cpp
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@ -198,6 +198,18 @@ void BlockTemplate::update(const MinerData& data, const Mempool& mempool, Wallet
m_mempoolTxs = mempool.m_transactions; m_mempoolTxs = mempool.m_transactions;
} }
// Safeguard for busy mempool moments
// If the block template gets too big, nodes won't be able to send and receive it because of p2p packet size limit
// Select 1000 transactions with the highest fee per byte
if (m_mempoolTxs.size() > 1000) {
std::nth_element(m_mempoolTxs.begin(), m_mempoolTxs.begin() + 1000, m_mempoolTxs.end(),
[this](const TxMempoolData& tx_a, const TxMempoolData& tx_b)
{
return tx_a.fee * tx_b.weight > tx_b.fee * tx_a.weight;
});
m_mempoolTxs.resize(1000);
}
const uint64_t base_reward = get_base_reward(data.already_generated_coins); const uint64_t base_reward = get_base_reward(data.already_generated_coins);
uint64_t total_tx_fees = 0; uint64_t total_tx_fees = 0;