public PendingBlock(byte[] blockHash, Block block, List <Hash> missing, AElfProtocolMsgType msgType)
{
Block = block;
BlockHash = blockHash;
MissingTxs = missing == null ? new List <PendingTx>() : missing.Select(m => new PendingTx {
Hash = m.Value.ToByteArray()
}).ToList();
MsgType = msgType;
}
public static Message CreateMessage(AElfProtocolMsgType messageMsgType, byte[] payload)
{
Message packetData = new Message
{
Type = (int)messageMsgType,
Length = payload.Length,
Payload = payload
};
return(packetData);
}
/// <summary>
/// When a block is received through the network it is placed here for sync
/// purposes. In the case that the transaction was not received through the
/// network, it will be placed here to sync.
/// </summary>
/// <param name="block"></param>
/// <param name="peer"></param>
private async Task <bool> AddBlockToSync(Block block, IPeer peer, AElfProtocolMsgType msgType)
{
if (block?.Header == null || block.Body == null)
{
throw new InvalidBlockException("The block, block header or block body is null");
}
byte[] blockHash;
try
{
blockHash = block.GetHash().DumpByteArray();
}
catch (Exception e)
{
throw new InvalidBlockException("Invalid block hash");
}
if (GetBlock(blockHash) != null)
{
_logger?.Warn("Block already in pending list.");
return(false);
}
var missingTxs = _poolService.GetMissingTransactions(block);
if (missingTxs == null)
{
_logger?.Warn("Unknown exception in the pool.");
return(false);
}
// todo check that the returned txs are actually in the block
var newPendingBlock = new PendingBlock(blockHash, block, missingTxs, msgType)
{
Peer = peer
};
var txsNeedToRevert = _syncService.AddPendingBlock(newPendingBlock);
if (!txsNeedToRevert.IsNullOrEmpty())
{
await _poolService.Revert(txsNeedToRevert);
}
_logger?.Debug(
$"Added block to sync {{ id : {blockHash.ToHex()}, index : {block.Header.Index}, tx-count : {block.Body.Transactions.Count} }} ");
return(true);
}
private async Task ProcessPeerMessage(PeerMessageReceivedArgs args)
{
if (args?.Peer == null)
{
_logger.Warn("Peer is invalid.");
return;
}
if (args.Message?.Payload == null)
{
_logger?.Warn($"Message from {args.Peer}, message/payload is null.");
return;
}
AElfProtocolMsgType msgType = (AElfProtocolMsgType)args.Message.Type;
switch (msgType)
{
case AElfProtocolMsgType.Announcement:
HandleAnnouncement(args.Message, args.Peer);
break;
case AElfProtocolMsgType.Block:
MessageHub.Instance.Publish(new BlockReceived(args.Block));
break;
case AElfProtocolMsgType.NewTransaction:
HandleNewTransaction(args.Message);
break;
case AElfProtocolMsgType.Headers:
HandleHeaders(args.Message);
break;
case AElfProtocolMsgType.RequestBlock:
await HandleBlockRequestJob(args);
break;
case AElfProtocolMsgType.HeaderRequest:
await HandleHeaderRequest(args);
break;
}
}
/// <summary>
/// This message broadcasts data to all of its peers. This creates and
/// sends an object with the provided pay-load and message type.
/// </summary>
/// <param name="messageMsgType"></param>
/// <param name="payload"></param>
/// <returns></returns>
private void BroadcastMessage(AElfProtocolMsgType messageMsgType, byte[] payload)
{
if (_peers == null || !_peers.Any())
{
_logger?.Warn("Cannot broadcast - no peers.");
return;
}
try
{
Message message = NetRequestFactory.CreateMessage(messageMsgType, payload);
foreach (var peer in _peers)
{
peer.EnqueueOutgoing(message);
}
}
catch (Exception e)
{
_logger?.Error(e, "Error while sending a message to the peers.");
}
}
public BlockReceivedEventArgs(Block block, IPeer peer, AElfProtocolMsgType msgType)
{
Block = block;
Peer = peer;
MsgType = msgType;
}
public TransactionsReceivedEventArgs(TransactionList txList, Peer peer, AElfProtocolMsgType msgType)
{
Transactions = txList;
Peer = peer;
MsgType = msgType;
}