public Block TryLoadBlock(ByteString id, byte[] data)
{
// Data should not exceed the maximum size.
if (data.Length > MaximumBlockSize)
{
throw new ArgumentException(nameof(data));
}
// Integrity check.
var computedId = BlockchainUtil.ComputeBlockId(data);
if (!ByteString.CopyFrom(computedId).Equals(id))
{
throw new ArgumentException(nameof(id));
}
// Try to deserialize the data for format validity check.
var block = BlockchainUtil.DeserializeBlock(data);
lock (Blocks)
{
if (Blocks.ContainsKey(id))
{
return(null);
}
Blocks.Add(id, data);
}
// Schedule the block for execution.
Executor.ProcessBlock(block);
return(block);
}
async Task HandleBody(InventoryMessage message, int peerId)
{
// Data should not exceed the maximum size.
var data = message.Data;
if (data.Length > MaximumBlockSize)
{
throw new ArgumentException();
}
// ハッシュ値正しい？
var id = message.IsBlock ?
BlockchainUtil.ComputeBlockId(data) :
Hash.ComputeDoubleSHA256(data);
if (!ByteString.CopyFrom(id).Equals(message.ObjectId))
{
return;
}
if (message.IsBlock)
{
// ミューテックス
lock (Blocks)
{
if (Blocks.ContainsKey(message.ObjectId))
{
return;
}
// ハッシュテーブルに追加
Blocks.Add(message.ObjectId, data);
}
var block = BlockchainUtil.DeserializeBlock(data);
// 前のブロックも知らなかったら前のももらう
var prevId = block.PreviousHash;
if (!Blocks.ContainsKey(prevId))
{
await ConnectionManager.SendAsync(new InventoryMessage
{
Type = Request,
IsBlock = true,
ObjectId = prevId,
}, peerId);
}
Executor.ProcessBlock(block);
}
else
{
if (MemoryPool.ContainsKey(message.ObjectId))
{
return;
}
var tx = BlockchainUtil.DeserializeTransaction(data);
// Ignore the coinbase transactions.
if (tx.InEntries.Count == 0)
{
return;
}
lock (MemoryPool)
{
if (MemoryPool.ContainsKey(message.ObjectId))
{
return;
}
MemoryPool.Add(message.ObjectId, tx);
}
}
message.Type = Advertise;
message.Data = null;
// 他の人に教えてあげる
await ConnectionManager.BroadcastAsync(message, peerId);
}
async Task HandleBody(InventoryMessage message, int peerId)
{
// Data should not exceed the maximum size.
var data = message.Data;
if (data.Length > MaximumBlockSize)
{
throw new ArgumentException();
}
var id = message.IsBlock ?
BlockchainUtil.ComputeBlockId(data) :
Hash.ComputeDoubleSHA256(data);
if (!ByteString.CopyFrom(id).Equals(message.ObjectId))
{
return;
}
if (message.IsBlock)
{
lock (Blocks)//並列処理を避ける
{
if (Blocks.ContainsKey(message.ObjectId))
{
return;
}
Blocks.Add(message.ObjectId, data);
}
var prevId = Deserialize <Block>(data).PreviousHash;
if (!Blocks.ContainsKey(prevId))
{
await ConnectionManager.SendAsync(new InventoryMessage//当該ブロックの前のブロックを持っていない場合はそれもRequestする（前のblockのIDが必要なため
{
Type = Request,
IsBlock = true,
ObjectId = prevId,
}, peerId);
}
else
{
Executor.ProcessBlock(data, prevId);
}
}
else
{
if (MemoryPool.ContainsKey(message.ObjectId))
{
return;
}
var tx = BlockchainUtil.DeserializeTransaction(data);
// Ignore the coinbase transactions.
if (tx.InEntries.Count == 0)
{
return;
}
lock (MemoryPool)
{
if (MemoryPool.ContainsKey(message.ObjectId))
{
return;
}
MemoryPool.Add(message.ObjectId, tx);
}
}
message.Type = Advertise;
message.Data = null;
await ConnectionManager.BroadcastAsync(message, peerId);
}//ネットワーク全体にもらったブロックを発信する
