public void AttachBroadcastedBlock(BlockSyncApiModel block, string nodeAddress)
{
bool isPastBlock = block.Index <= LastBlock.Index;
if (isPastBlock)
{
return;
}
Block minedBlock = Block.ReCreateBlock(block);
ValidateBlockHash(minedBlock, minedBlock.Nonce, minedBlock.BlockHash);
// replace blockchain if another blockain is longer
int nodeDifference = minedBlock.Index - BlockChain.Count;
if (nodeDifference >= 6)
{
int startIndex = minedBlock.Index - nodeDifference;
List <Block> forkedBlocks = NodeSynchornizator.GetBlocksForSync(nodeAddress);
foreach (var bl in forkedBlocks)
{
RevalidateBlock(bl);
BlockChain.AddOrUpdate(bl.Index, bl, (index, curBlock) => { return(bl); });
}
List <string> blockTxs = forkedBlocks.SelectMany(b => b.Transactions).Select(t => t.TransactionHash).ToList();
PendingTransactions = new ConcurrentBag <Transaction>(PendingTransactions.
Where(t => !blockTxs.Contains(t.TransactionHash)));
}
else
{
bool isFutureBlock = LastBlock.BlockHash != minedBlock.PreviousBlockHash;
if (isFutureBlock)
{
return;
}
RevalidateBlock(minedBlock);
// remove mined transactions from pending transactions
List <string> minedTxIds = minedBlock.Transactions.Select(t => t.TransactionHash).ToList();
PendingTransactions = new ConcurrentBag <Transaction>(PendingTransactions.Where(t => !minedTxIds.Contains(t.TransactionHash)).ToList());
BlockChain.TryAdd(minedBlock.Index, minedBlock);
}
}