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SideChain: fixed a rare sync bug

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P2Pool could fail to sync if uncles of depth 3 were present at a certain depth in the chain
This commit is contained in:
SChernykh 2023-04-22 18:55:11 +02:00
parent 75c156578c
commit b498084388
1 changed files with 3 additions and 3 deletions
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6
src/side_chain.cpp
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@ -1368,10 +1368,10 @@ void SideChain::verify(PoolBlock* block)
// Deep block
//
// Blocks in PPLNS window (m_chainWindowSize) require up to m_chainWindowSize earlier blocks to verify
// If a block is deeper than m_chainWindowSize * 2 - 1 it can't influence blocks in PPLNS window
// If a block is deeper than (m_chainWindowSize - 1) * 2 + UNCLE_BLOCK_DEPTH it can't influence blocks in PPLNS window
// Also, having so many blocks on top of this one means it was verified by the network at some point
// We skip checks in this case to make pruning possible
if (block->m_depth >= m_chainWindowSize * 2) {
if (block->m_depth > (m_chainWindowSize - 1) * 2 + UNCLE_BLOCK_DEPTH) {
LOGINFO(4, "block " << block->m_sidechainId << " skipped verification");
block->m_verified = true;
block->m_invalid = false;
@ -1925,7 +1925,7 @@ void SideChain::update_depths(PoolBlock* block)
blocks_to_update.pop_back();
// Verify this block and possibly other blocks on top of it when we're sure it will get verified
if (!block->m_verified && ((block->m_depth >= m_chainWindowSize * 2) || (block->m_sidechainHeight == 0))) {
if (!block->m_verified && ((block->m_depth > (m_chainWindowSize - 1) * 2 + UNCLE_BLOCK_DEPTH) || (block->m_sidechainHeight == 0))) {
verify_loop(block);
}