private bool processBlockHeader(BlockHeader header)
{
if (lastBlockHeader != null && lastBlockHeader.blockChecksum != null && !header.lastBlockChecksum.SequenceEqual(lastBlockHeader.blockChecksum))
{
Logging.warn("TIV: Invalid last block checksum");
// discard the block
// TODO require previous block to get verifications from 3 nodes
// if in verification mode, detect liar and flag him
// below is an implementation that's good enough for now
if (minBlockHeightReorg < lastBlockHeader.blockNum - 7)
{
minBlockHeightReorg = lastBlockHeader.blockNum - 7;
}
BlockHeader prev_header = BlockHeaderStorage.getBlockHeader(minBlockHeightReorg);
if (prev_header == null)
{
return(false);
}
lastBlockHeader = prev_header;
ConsensusConfig.redactedWindowSize = ConsensusConfig.getRedactedWindowSize(lastBlockHeader.version);
ConsensusConfig.minRedactedWindowSize = ConsensusConfig.getRedactedWindowSize(lastBlockHeader.version);
return(false);
}
if (!header.calculateChecksum().SequenceEqual(header.blockChecksum))
{
Logging.warn("TIV: Invalid block checksum");
return(false);
}
lastBlockHeader = header;
ConsensusConfig.redactedWindowSize = ConsensusConfig.getRedactedWindowSize(lastBlockHeader.version);
ConsensusConfig.minRedactedWindowSize = ConsensusConfig.getRedactedWindowSize(lastBlockHeader.version);
if (BlockHeaderStorage.saveBlockHeader(lastBlockHeader))
{
// Cleanup every n blocks
if ((header.blockNum > CoreConfig.maxBlockHeadersPerDatabase * 25) && header.blockNum % CoreConfig.maxBlockHeadersPerDatabase == 0)
{
BlockHeaderStorage.removeAllBlocksBefore(header.blockNum - (CoreConfig.maxBlockHeadersPerDatabase * 25));
}
}
IxianHandler.receivedBlockHeader(lastBlockHeader, true);
return(true);
}
private bool processBlockHeader(BlockHeader header)
{
if (lastBlockHeader != null && lastBlockHeader.blockChecksum != null && !header.lastBlockChecksum.SequenceEqual(lastBlockHeader.blockChecksum))
{
Logging.warn("TIV: Invalid last block checksum");
// discard the block
// require previous block to get verifications from 3 nodes
// if in verification mode, detect liar and flag him
return(false);
}
if (!header.calculateChecksum().SequenceEqual(header.blockChecksum))
{
Logging.warn("TIV: Invalid block checksum");
return(false);
}
lastBlockHeader = header;
if (!BlockHeaderStorage.saveBlockHeader(lastBlockHeader))
{
return(false);
}
// Cleanup every n blocks
if ((header.blockNum > CoreConfig.maxBlockHeadersPerDatabase * 25) && header.blockNum % CoreConfig.maxBlockHeadersPerDatabase == 0)
{
BlockHeaderStorage.removeAllBlocksBefore(header.blockNum - (CoreConfig.maxBlockHeadersPerDatabase * 25));
}
IxianHandler.receivedBlockHeader(lastBlockHeader, true);
return(true);
}
