public Task DeleteFileAsync(string key, TimeSpan?timeout = null)
{
if (timeout == null)
{
timeout = TimeSpan.FromSeconds(30);
}
var request = new FileDeleteRequest()
{
MessageId = Guid.NewGuid(),
Key = key
};
var bytes = SerializeManager.Current.Serialize(request);
var waitItem = new FileWaitItem(request.MessageId);
lock (_Sync)
{
_WaitDic.Add(waitItem.MessageId, waitItem);
}
AttachCompletionToWaitItem(waitItem, timeout.Value);
SendData(bytes);
return(waitItem.CompletionSource.Task);
}
private void AttachCompletionToWaitItem(FileWaitItem waitItem, TimeSpan timeout)
{
var cancelTokenSource = new CancellationTokenSource();
Action clear = () =>
{
lock (_Sync)
{
_WaitDic.Remove(waitItem.MessageId);
}
cancelTokenSource.Cancel();
waitItem.CancelTask = null;
};
waitItem.CancelTask = Task
.Delay(timeout, cancelTokenSource.Token)
.ContinueWith(t =>
{
if (t.IsCanceled)
{
return;
}
waitItem.CompletionSource?.TrySetException(new TimeoutException());
clear();
});
waitItem.CompletionSource.Task.ContinueWith(t =>
{
var ex = t.Exception;
if (ex != null)
{
OnException(Session, ex, disconnect: false);
}
clear();
});
}
