async Task StartSynchronizer()
{
"Start network synchronization.".Log(LogFile);
while (true)
{
await Task.Delay(3000).ConfigureAwait(false);
if (!Blockchain.TryLock())
{
continue;
}
if (!TryGetPeerNotSynchronized(
out Peer peer))
{
Blockchain.ReleaseLock();
continue;
}
try
{
string.Format(
"Synchronize with peer {0}",
peer.GetID())
.Log(LogFile);
await peer.Synchronize();
string.Format(
"Synchronization with peer {0} completed.",
peer.GetID())
.Log(LogFile);
}
catch (Exception ex)
{
string.Format(
"Exception {0} when syncing with peer {1}: \n{2}",
ex.GetType(),
peer.GetID(),
ex.Message)
.Log(LogFile);
peer.FlagDispose = true;
}
ReleasePeer(peer);
Blockchain.ReleaseLock();
}
}
public async Task StartMessageListener()
{
try
{
while (true)
{
await ReadMessage(Cancellation.Token);
string.Format(
"{0} received message {1}",
GetID(),
Command)
.Log(LogFile);
switch (Command)
{
case "ping":
await SendMessage(new PongMessage(
BitConverter.ToUInt64(Payload, 0)));
break;
case "addr":
AddressMessage addressMessage =
new AddressMessage(Payload);
break;
case "sendheaders":
await SendMessage(new SendHeadersMessage());
break;
case "feefilter":
FeeFilterMessage feeFilterMessage =
new FeeFilterMessage(Payload);
FeeFilterValue = feeFilterMessage.FeeFilterValue;
break;
case "block":
byte[] blockBytes = Payload
.Take(PayloadLength)
.ToArray();
Block block = ParserToken.ParseBlock(blockBytes);
if (IsStateIdle())
{
string.Format(
"{0}: Receives unsolicited block {1}.",
GetID(),
block.Header.Hash.ToHexString())
.Log(LogFile);
Console.Beep();
if (!Blockchain.TryLock())
{
break;
}
try
{
ProcessHeaderUnsolicited(
block.Header,
out bool flagHeaderExtendsChain);
if (flagHeaderExtendsChain)
{
if (!Blockchain.TryInsertBlock(
block,
flagValidateHeader: true))
{
// Blockchain insert sollte doch einfach Ex. schmeissen
}
}
}
catch (Exception ex)
{
Blockchain.ReleaseLock();
throw ex;
}
Blockchain.ReleaseLock();
}
else if (IsStateAwaitingBlockDownload())
{
BlockDownload.InsertBlock(block);
if (BlockDownload.IsDownloadCompleted)
{
SignalProtocolTaskCompleted.Post(true);
lock (LOCK_StateProtocol)
{
State = StateProtocol.IDLE;
}
break;
}
Cancellation.CancelAfter(
TIMEOUT_RESPONSE_MILLISECONDS);
}
break;
case "headers":
Header header = null;
int index = 0;
int countHeaders = VarInt.GetInt32(
Payload,
ref index);
string.Format(
"{0}: Receiving {1} headers.",
GetID(),
countHeaders)
.Log(LogFile);
if (IsStateIdle())
{
header = Token.ParseHeader(
Payload,
ref index);
string.Format(
"Received unsolicited header {0}",
header.Hash.ToHexString())
.Log(LogFile);
index += 1;
if (!Blockchain.TryLock())
{
break;
}
try
{
ProcessHeaderUnsolicited(
header,
out bool flagHeaderExtendsChain);
if (flagHeaderExtendsChain)
{
List <Inventory> inventories = new()
{
new Inventory(
InventoryType.MSG_BLOCK,
header.Hash)
};
SendMessage(new GetDataMessage(inventories));
}
}
catch (Exception ex)
{
Blockchain.ReleaseLock();
throw ex;
}
Blockchain.ReleaseLock();
}
else if (IsStateGetHeaders())
{
if (countHeaders > 0)
{
while (index < PayloadLength)
{
header = Token.ParseHeader(
Payload,
ref index);
index += 1;
HeaderDownload.InsertHeader(header, Token);
}
}
SignalProtocolTaskCompleted.Post(true);
}
break;
case "notfound":
Debug.WriteLine(
"Command notfound not implemented yet.");
break;
case "inv":
var invMessage = new InvMessage(Payload);
var getDataMessage = new GetDataMessage(
invMessage.Inventories);
break;
case "getdata":
getDataMessage = new GetDataMessage(Payload);
foreach (Inventory inventory in getDataMessage.Inventories)
{
if (inventory.Type == InventoryType.MSG_TX)
{
if (Token.TryRequestTX(
inventory.Hash,
out byte[] tXRaw))