/// <summary>
/// Removes the content handler from the subscription asynchronously.
/// </summary>
/// <param name="channel">The channel from which unsubscribe.</param>
/// <param name="contentHandler">The content handler to be removed from this subscription.</param>
/// <param name="keepUnderlyingSubscription">Indicates if the node should keep the underlying subscription to the channel in order to improve efficiency in future subscriptions to it.</param>
/// <returns>A task which value is true if the operation succeeded.</returns>
public virtual Task <bool> Unsubscribe(string channel, ContentHandler contentHandler, bool keepUnderlyingSubscription = false)
{
if (!IsConnected)
{
throw new NodeDisconnectedException();
}
if (string.IsNullOrWhiteSpace(channel))
{
throw new ArgumentNullException(nameof(channel));
}
if (contentHandler == null)
{
throw new ArgumentNullException(nameof(contentHandler));
}
channel = channel.ToLower();
if (_channelsSubscriptions.Remove(contentHandler, channel))
{
contentHandler.BeginInvoke(null, new IrisContextHook {
Unsubscribing = true
}, null, null);
// If there aren't any subscriptions and there's no request of keeping the underlying subscription
if (!_channelsSubscriptions.GetSubscriptions(channel, true).Any() && !keepUnderlyingSubscription)
{
return(Publish(new IrisUnsubscribe(Id, channel)));
}
}
return(_completedFailedTask);
}
/// <summary>
/// Removes the content handler from the broadcast communication asynchronously.
/// </summary>
/// <param name="contentHandler">The content handler to be removed from the broadcast.</param>
/// <returns>A task which value is true if the operation succeeded.</returns>
public Task <bool> UnsubscribeFromBroadcast(ContentHandler contentHandler)
{
if (!IsConnected)
{
throw new NodeDisconnectedException();
}
if (contentHandler == null)
{
throw new ArgumentNullException(nameof(contentHandler));
}
if (_broadcastHandlers.Remove(contentHandler))
{
contentHandler.BeginInvoke(null, new IrisContextHook {
Unsubscribing = true
}, null, null);
return(_completedSucceededTask);
}
return(_completedFailedTask);
}
