public async Task <bool> SendPing()
{
if (!_isInitialized)
{
return(true);
}
if (_pongCompletionSource != null)
{
if (Logger.IsWarn)
{
Logger.Warn($"Another ping request in process: {P2PSession.RemoteNodeId}");
}
return(true);
}
_pongCompletionSource = new TaskCompletionSource <Packet>();
var pongTask = _pongCompletionSource.Task;
if (Logger.IsTrace)
{
Logger.Trace($"{P2PSession.RemoteNodeId} P2P sending ping on {P2PSession.RemotePort} ({RemoteClientId})");
}
Send(PingMessage.Instance);
P2PSession?.NodeStats.AddNodeStatsEvent(NodeStatsEventType.P2PPingOut);
var pingPerfCalcId = PerfService.StartPerfCalc();
var firstTask = await Task.WhenAny(pongTask, Task.Delay(Timeouts.P2PPing));
_pongCompletionSource = null;
if (firstTask != pongTask)
{
return(false);
}
var latency = PerfService.EndPerfCalc(pingPerfCalcId);
if (latency.HasValue)
{
P2PSession?.NodeStats.AddLatencyCaptureEvent(NodeLatencyStatType.P2PPingPong, latency.Value);
}
return(true);
}
private async Task <BlockHeader[]> SendRequest(GetBlockHeadersMessage message, CancellationToken token)
{
if (Logger.IsTrace)
{
Logger.Trace("Sending headers request:");
Logger.Trace($"Starting blockhash: {message.StartingBlockHash}");
Logger.Trace($"Starting number: {message.StartingBlockNumber}");
Logger.Trace($"Skip: {message.Skip}");
Logger.Trace($"Reverse: {message.Reverse}");
Logger.Trace($"Max headers: {message.MaxHeaders}");
}
var request = new Request <GetBlockHeadersMessage, BlockHeader[]>(message);
_headersRequests.Add(request, token);
var perfCalcId = PerfService.StartPerfCalc();
Send(request.Message);
Task <BlockHeader[]> task = request.CompletionSource.Task;
var firstTask = await Task.WhenAny(task, Task.Delay(Timeouts.Eth62, token));
if (firstTask.IsCanceled)
{
token.ThrowIfCancellationRequested();
}
if (firstTask == task)
{
var latency = PerfService.EndPerfCalc(perfCalcId);
if (latency.HasValue)
{
P2PSession?.NodeStats.AddLatencyCaptureEvent(NodeLatencyStatType.BlockHeaders, latency.Value);
}
return(task.Result);
}
// TODO: work in progress
throw new TimeoutException($"{P2PSession.RemoteNodeId} Request timeout in {nameof(GetBlockHeadersMessage)}");
}