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Warn if blockchain majority doesn't match CBlock::CURRENT_VERSION

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This adds a warning "this version is obsolete, upgrade required" if
more than 50 of the previous 100 blocks in the blockchain are
a new version.
This commit is contained in:
Gavin Andresen 2012-06-27 13:51:51 -04:00
parent dae3e10a5a
commit 2a919e396d
1 changed files with 18 additions and 0 deletions
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18
src/main.cpp
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@ -1623,6 +1623,24 @@ bool CBlock::SetBestChain(CTxDB& txdb, CBlockIndex* pindexNew)
hashBestChain.ToString().substr(0,20).c_str(), nBestHeight, bnBestChainWork.ToString().c_str(),
DateTimeStrFormat("%x %H:%M:%S", pindexBest->GetBlockTime()).c_str());
// Check the version of the last 100 blocks to see if we need to upgrade:
if (!fIsInitialDownload)
{
int nUpgraded = 0;
const CBlockIndex* pindex = pindexBest;
for (int i = 0; i < 100 && pindex != NULL; i++)
{
if (pindex->nVersion > CBlock::CURRENT_VERSION)
++nUpgraded;
pindex = pindex->pprev;
}
if (nUpgraded > 0)
printf("SetBestChain: %d of last 100 blocks above version %d\n", nUpgraded, CBlock::CURRENT_VERSION);
if (nUpgraded > 100/2)
// strMiscWarning is read by GetWarnings(), called by Qt and the JSON-RPC code to warn the user:
strMiscWarning = _("Warning: this version is obsolete, upgrade required");
}
std::string strCmd = GetArg("-blocknotify", "");
if (!fIsInitialDownload && !strCmd.empty())