private void SendTimedRequest(Message message, BlockRequest br)
{
TimedBlockRequest blockRequest = new TimedBlockRequest(message, br, RequestTimeout);
blockRequest.SetCurrentPeer(this);
blockRequest.RequestTimedOut += TimedRequestOnRequestTimedOut;
lock (_blockReqLock)
{
BlockRequests.Add(blockRequest);
}
EnqueueOutgoing(message, (_) =>
{
blockRequest.Start();
if (blockRequest.IsById)
{
_logger?.Trace($"[{this}] Block request sent {{ hash: {blockRequest.Id.ToHex()} }}");
}
else
{
_logger?.Trace($"[{this}] Block request sent {{ height: {blockRequest.Height} }}");
}
});
}
private void TimedRequestOnRequestTimedOut(object sender, EventArgs e)
{
if (sender is TimedBlockRequest req)
{
_logger?.Warn($"[{this}] failed timed request {req}");
if (req.CurrentPeerRetries < MaxRequestRetries)
{
if (!req.SetCurrentPeer(this))
{
return;
}
_logger?.Debug($"[{this}] try again {req}.");
EnqueueOutgoing(req.Message, (_) =>
{
// last check for cancelation
if (req.IsCanceled)
{
return;
}
req.Start();
if (req.IsById)
{
_logger?.Trace($"[{this}] Block request sent {{ hash: {req.Id.ToHex()} }}");
}
else
{
_logger?.Trace($"[{this}] Block request sent {{ height: {req.Height} }}");
}
});
}
else
{
lock (_blockReqLock)
{
BlockRequests.RemoveAll(b => (b.IsById && b.Id.BytesEqual(req.Id)) || (!b.IsById && b.Height == req.Height));
}
_logger?.Warn($"[{this}] request failed {req}.");
req.RequestTimedOut -= TimedRequestOnRequestTimedOut;
Dispose();
}
}
}
/// <summary>
/// This method is used to stop the timer for a block request.
/// </summary>
/// <param name="block"></param>
public void StopBlockTimer(Block block)
{
byte[] blockHash = block.GetHashBytes();
int blockHeight = (int)block.Header.Index;
_logger.Info($"Receiving block {block.BlockHashToHex} from {this} at height {blockHeight}, " +
$"with {block.Body.Transactions.Count} txns. (TransactionListCount = {block.Body.TransactionList.Count})");
lock (_blockReqLock)
{
TimedBlockRequest req = BlockRequests.FirstOrDefault(b => (b.IsById && b.Id.BytesEqual(blockHash)) || (!b.IsById && b.Height == blockHeight));
if (req != null)
{
req.Cancel();
BlockRequests.Remove(req);
}
}
}
