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P2PServer: tweaked invalid timestamp logic

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SChernykh 2022-11-03 13:52:29 +01:00
parent 45660e3d96
commit c090b0cf62
1 changed files with 25 additions and 13 deletions
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26
src/p2p_server.cpp
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@ -2067,25 +2067,37 @@ bool P2PServer::P2PClient::handle_incoming_block_async(const PoolBlock* block, u
// Limit system clock difference between connected peers // Limit system clock difference between connected peers
if (max_time_delta) { if (max_time_delta) {
static uint64_t total_checks = 0; static hash prev_checked_block;
static uint64_t failed_checks = 0; if (block->m_sidechainId != prev_checked_block) {
prev_checked_block = block->m_sidechainId;
++total_checks;
const uint64_t t = time(nullptr); const uint64_t t = time(nullptr);
if ((block->m_timestamp + max_time_delta < t) || (block->m_timestamp > t + max_time_delta)) { const uint32_t failed = ((block->m_timestamp + max_time_delta < t) || (block->m_timestamp > t + max_time_delta)) ? 1 : 0;
static uint32_t failed_history = 0;
failed_history = (failed_history << 1) | failed;
if (failed) {
LOGWARN(4, "peer " << static_cast<char*>(m_addrString) LOGWARN(4, "peer " << static_cast<char*>(m_addrString)
<< " sent a block (mined by " << block->m_minerWallet << ") with an invalid timestamp " << block->m_timestamp << " sent a block (mined by " << block->m_minerWallet << ") with an invalid timestamp " << block->m_timestamp
<< " (your local timestamp is " << t << ")"); << " (your local timestamp is " << t << ")");
uint32_t failed_checks = 0;
for (uint32_t k = 1; k != 0; k <<= 1) {
if (failed_history & k) {
++failed_checks; ++failed_checks;
if ((total_checks > 10) && (failed_checks * 4 > total_checks * 3)) { }
LOGWARN(1, "Your system clock might be invalid: " << failed_checks << " of " << total_checks << " blocks were rejected due to timestamp difference"); }
if (failed_checks > 16) {
LOGWARN(1, "Your system clock might be invalid: " << failed_checks << " of 32 last blocks were rejected due to timestamp difference");
} }
return true; return true;
} }
} }
}
if (server->m_pool->side_chain().block_seen(*block)) { if (server->m_pool->side_chain().block_seen(*block)) {
LOGINFO(6, "block " << block->m_sidechainId << " (nonce " << block->m_nonce << ", extra_nonce " << block->m_extraNonce << ") was received before, skipping it"); LOGINFO(6, "block " << block->m_sidechainId << " (nonce " << block->m_nonce << ", extra_nonce " << block->m_extraNonce << ") was received before, skipping it");