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Adjust best fork warning conditions

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Signed-off-by: Anthony Fieroni <bvbfan@abv.bg>
This commit is contained in:
Anthony Fieroni 2020-02-25 09:19:14 +02:00
parent ed26eb347f
commit d3f9a44e57
1 changed files with 4 additions and 4 deletions
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8
src/validation.cpp
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@ -1443,9 +1443,9 @@ static void CheckForkWarningConditions() EXCLUSIVE_LOCKS_REQUIRED(cs_main)
if (::ChainstateActive().IsInitialBlockDownload())
return;
// If our best fork is no longer within 72 blocks (+/- 12 hours if no one mines it)
// If our best fork is no longer within 288 blocks (~ 24 blocks per hour +/- 12 hours if no one mines it)
// of our head, drop it
if (pindexBestForkTip && ::ChainActive().Height() - pindexBestForkTip->nHeight >= 72)
if (pindexBestForkTip && ::ChainActive().Height() - pindexBestForkTip->nHeight >= 288)
pindexBestForkTip = nullptr;
if (pindexBestForkTip || (pindexBestInvalid && pindexBestInvalid->nChainWork > ::ChainActive().Tip()->nChainWork + (GetBlockProof(*::ChainActive().Tip()) * 6)))
@ -1492,7 +1492,7 @@ static void CheckForkWarningConditionsOnNewFork(CBlockIndex* pindexNewForkTip) E
}
// We define a condition where we should warn the user about as a fork of at least 7 blocks
// with a tip within 72 blocks (+/- 12 hours if no one mines it) of ours
// with a tip within 288 blocks (+/- 12 hours if no one mines it) of ours
// We use 7 blocks rather arbitrarily as it represents just under 10% of sustained network
// hash rate operating on the fork.
// or a chain that is entirely longer than ours and invalid (note that this should be detected by both)
@ -1500,7 +1500,7 @@ static void CheckForkWarningConditionsOnNewFork(CBlockIndex* pindexNewForkTip) E
// the 7-block condition and from this always have the most-likely-to-cause-warning fork
if (pfork && (!pindexBestForkTip || pindexNewForkTip->nHeight > pindexBestForkTip->nHeight) &&
pindexNewForkTip->nChainWork - pfork->nChainWork > (GetBlockProof(*pfork) * 7) &&
::ChainActive().Height() - pindexNewForkTip->nHeight < 72)
::ChainActive().Height() - pindexNewForkTip->nHeight < 288)
{
pindexBestForkTip = pindexNewForkTip;
pindexBestForkBase = pfork;