private async Task ReceiveAsync(string account, long from, CancellationToken cancellationToken = default)
{
IsReceiving = true;
while (!cancellationToken.IsCancellationRequested)
{
try
{
await semaphore.WaitAsync(cancellationToken).ContinueWith(tsk => { });
var tmpFrom = (long)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds;
var result = await MakeRequestAsync(new StatementRequest(account, from)).ConfigureAwait(false);
from = tmpFrom;
if (result != null)
{
foreach (var statementItem in result)
{
OnStatement?.Invoke(this, new StatementEventArgs(account, statementItem));
}
}
await Task.Delay(Convert.ToInt32(Timeout.TotalMilliseconds));
}
catch (Exception)
{
}
finally
{
semaphore.Release();
}
}
}
public virtual T Visit(OnStatement node)
{
Visit((Statement)node);
return(traverse(node.body));
}
public override bool Visit(OnStatement node)
{
Visit((Statement)node);
TraversePrint(node.body);
return(true);
}