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Fix client dead lock and protocol version issues.

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This commit is contained in:
Christian
2018-04-11 21:22:08 +02:00
parent c06d84e834
commit ec41efd860
22 changed files with 190 additions and 126 deletions
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Frameworks/MQTTnet.NetStandard/Adapter/MqttChannelAdapter.cs
+4 -4
View File
@@ -36,7 +36,7 @@ namespace MQTTnet.Adapter
public Task ConnectAsync(TimeSpan timeout)
{
ThrowIfDisposed();
_logger.Trace<MqttChannelAdapter>("Connecting [Timeout={0}]", timeout);
_logger.Verbose<MqttChannelAdapter>("Connecting [Timeout={0}]", timeout);
return ExecuteAndWrapExceptionAsync(() => _channel.ConnectAsync().TimeoutAfter(timeout));
}
@@ -44,7 +44,7 @@ namespace MQTTnet.Adapter
public Task DisconnectAsync(TimeSpan timeout)
{
ThrowIfDisposed();
_logger.Trace<MqttChannelAdapter>("Disconnecting [Timeout={0}]", timeout);
_logger.Verbose<MqttChannelAdapter>("Disconnecting [Timeout={0}]", timeout);
return ExecuteAndWrapExceptionAsync(() => _channel.DisconnectAsync().TimeoutAfter(timeout));
}
@@ -70,7 +70,7 @@ namespace MQTTnet.Adapter
continue;
}
_logger.Trace<MqttChannelAdapter>("TX >>> {0} [Timeout={1}]", packet, timeout);
_logger.Verbose<MqttChannelAdapter>("TX >>> {0} [Timeout={1}]", packet, timeout);
var chunks = PacketSerializer.Serialize(packet);
foreach (var chunk in chunks)
@@ -135,7 +135,7 @@ namespace MQTTnet.Adapter
throw new MqttProtocolViolationException("Received malformed packet.");
}
_logger.Trace<MqttChannelAdapter>("RX <<< {0}", packet);
_logger.Verbose<MqttChannelAdapter>("RX <<< {0}", packet);
}
finally
{
Frameworks/MQTTnet.NetStandard/Client/IMqttClientAdapterFactory.cs
+1 -1
View File
@@ -5,6 +5,6 @@ namespace MQTTnet.Client
{
public interface IMqttClientAdapterFactory
{
IMqttChannelAdapter CreateClientAdapter(IMqttClientChannelOptions options, IMqttNetLogger logger);
IMqttChannelAdapter CreateClientAdapter(IMqttClientOptions options, IMqttNetLogger logger);
}
}
Frameworks/MQTTnet.NetStandard/Client/IMqttClientOptions.cs
+1 -1
View File
@@ -13,7 +13,7 @@ namespace MQTTnet.Client
TimeSpan CommunicationTimeout { get; }
TimeSpan KeepAlivePeriod { get; }
TimeSpan? KeepAliveSendInterval { get; set; }
TimeSpan? KeepAliveSendInterval { get; }
MqttProtocolVersion ProtocolVersion { get; }
Frameworks/MQTTnet.NetStandard/Client/MqttClient.cs
+46 -46
View File
@@ -57,16 +57,16 @@ namespace MQTTnet.Client
_packetIdentifierProvider.Reset();
_packetDispatcher.Reset();
_adapter = _adapterFactory.CreateClientAdapter(options.ChannelOptions, _logger);
_adapter = _adapterFactory.CreateClientAdapter(options, _logger);
_logger.Trace<MqttClient>("Trying to connect with server.");
_logger.Verbose<MqttClient>("Trying to connect with server.");
await _adapter.ConnectAsync(_options.CommunicationTimeout).ConfigureAwait(false);
_logger.Trace<MqttClient>("Connection with server established.");
_logger.Verbose<MqttClient>("Connection with server established.");
await StartReceivingPacketsAsync().ConfigureAwait(false);
var connectResponse = await AuthenticateAsync(options.WillMessage).ConfigureAwait(false);
_logger.Trace<MqttClient>("MQTT connection with server established.");
_logger.Verbose<MqttClient>("MQTT connection with server established.");
_sendTracker.Restart();
@@ -77,12 +77,14 @@ namespace MQTTnet.Client
IsConnected = true;
Connected?.Invoke(this, new MqttClientConnectedEventArgs(connectResponse.IsSessionPresent));
_logger.Info<MqttClient>("Connected.");
return new MqttClientConnectResult(connectResponse.IsSessionPresent);
}
catch (Exception exception)
{
_logger.Error<MqttClient>(exception, "Error while connecting with server.");
await DisconnectInternalAsync(exception).ConfigureAwait(false);
await DisconnectInternalAsync(null, exception).ConfigureAwait(false);
throw;
}
@@ -104,7 +106,7 @@ namespace MQTTnet.Client
}
finally
{
await DisconnectInternalAsync(null).ConfigureAwait(false);
await DisconnectInternalAsync(null, null).ConfigureAwait(false);
}
}
@@ -159,7 +161,7 @@ namespace MQTTnet.Client
case MqttQualityOfServiceLevel.AtMostOnce:
{
// No packet identifier is used for QoS 0 [3.3.2.2 Packet Identifier]
await SendAsync((MqttPublishPacket[])qosGroup.ToArray()).ConfigureAwait(false);
await SendAsync(qosGroup.Cast<MqttBasePacket>().ToArray()).ConfigureAwait(false);
break;
}
case MqttQualityOfServiceLevel.AtLeastOnce:
@@ -236,33 +238,48 @@ namespace MQTTnet.Client
if (IsConnected) throw new MqttProtocolViolationException(message);
}
private async Task DisconnectInternalAsync(Exception exception)
private async Task DisconnectInternalAsync(Task sender, Exception exception)
{
await _disconnectLock.WaitAsync();
var clientWasConnected = IsConnected;
try
{
IsConnected = false;
if (_cancellationTokenSource == null || _cancellationTokenSource.IsCancellationRequested)
{
return;
}
_cancellationTokenSource.Cancel(false);
}
catch (Exception adapterException)
{
_logger.Warning<MqttClient>(adapterException, "Error while disconnecting from adapter.");
}
finally
{
_disconnectLock.Release();
}
if (_packetReceiverTask != null)
var clientWasConnected = IsConnected;
IsConnected = false;
try
{
if (_packetReceiverTask != null && _packetReceiverTask != sender)
{
Task.WaitAll(_packetReceiverTask);
_packetReceiverTask.Wait();
}
if (_keepAliveMessageSenderTask != null)
if (_keepAliveMessageSenderTask != null && _keepAliveMessageSenderTask != sender)
{
Task.WaitAll(_keepAliveMessageSenderTask);
_keepAliveMessageSenderTask.Wait();
}
await _adapter.DisconnectAsync(_options.CommunicationTimeout).ConfigureAwait(false);
_logger.Trace<MqttClient>("Disconnected from adapter.");
if (_adapter != null)
{
await _adapter.DisconnectAsync(_options.CommunicationTimeout).ConfigureAwait(false);
}
_logger.Verbose<MqttClient>("Disconnected from adapter.");
}
catch (Exception adapterException)
{
@@ -272,12 +289,9 @@ namespace MQTTnet.Client
{
_adapter?.Dispose();
_adapter = null;
_cancellationTokenSource?.Dispose();
_cancellationTokenSource = null;
_disconnectLock.Release();
_logger.Info<MqttClient>("Disconnected.");
Disconnected?.Invoke(this, new MqttClientDisconnectedEventArgs(clientWasConnected, exception));
}
@@ -287,8 +301,6 @@ namespace MQTTnet.Client
{
try
{
_logger.Info<MqttClient>("Received <<< {0}", packet);
if (packet is MqttPublishPacket publishPacket)
{
await ProcessReceivedPublishPacketAsync(publishPacket).ConfigureAwait(false);
@@ -395,7 +407,7 @@ namespace MQTTnet.Client
private async Task SendKeepAliveMessagesAsync()
{
_logger.Info<MqttClient>("Start sending keep alive packets.");
_logger.Verbose<MqttClient>("Start sending keep alive packets.");
try
{
@@ -415,37 +427,31 @@ namespace MQTTnet.Client
await Task.Delay(keepAliveSendInterval, _cancellationTokenSource.Token).ConfigureAwait(false);
}
}
catch (OperationCanceledException)
{
}
catch (Exception exception)
{
if (_cancellationTokenSource.Token.IsCancellationRequested)
if (exception is OperationCanceledException)
{
return;
}
if (exception is MqttCommunicationException)
else if (exception is MqttCommunicationException)
{
_logger.Warning<MqttClient>(exception, "MQTT communication exception while sending/receiving keep alive packets.");
}
else
{
_logger.Warning<MqttClient>(exception, "Unhandled exception while sending/receiving keep alive packets.");
_logger.Error<MqttClient>(exception, "Unhandled exception while sending/receiving keep alive packets.");
}
await DisconnectInternalAsync(exception).ConfigureAwait(false);
await DisconnectInternalAsync(_keepAliveMessageSenderTask, exception).ConfigureAwait(false);
}
finally
{
_logger.Info<MqttClient>("Stopped sending keep alive packets.");
_logger.Verbose<MqttClient>("Stopped sending keep alive packets.");
}
}
private async Task ReceivePacketsAsync()
{
_logger.Info<MqttClient>("Start receiving packets.");
_logger.Verbose<MqttClient>("Start receiving packets.");
try
{
@@ -463,31 +469,25 @@ namespace MQTTnet.Client
StartProcessReceivedPacket(packet);
}
}
catch (OperationCanceledException)
{
}
catch (Exception exception)
{
if (_cancellationTokenSource.IsCancellationRequested)
if (exception is OperationCanceledException)
{
return;
}
if (exception is MqttCommunicationException)
else if (exception is MqttCommunicationException)
{
_logger.Warning<MqttClient>(exception, "MQTT communication exception while receiving packets.");
}
else
{
_logger.Error<MqttClient>(exception, "Unhandled exception while receiving packets.");
}
await DisconnectInternalAsync(exception).ConfigureAwait(false);
await DisconnectInternalAsync(_packetReceiverTask, exception).ConfigureAwait(false);
}
finally
{
_logger.Info<MqttClient>("Stopped receiving packets.");
_logger.Verbose<MqttClient>("Stopped receiving packets.");
}
}
Frameworks/MQTTnet.NetStandard/Diagnostics/IMqttNetLogger.cs
+1 -1
View File
@@ -6,7 +6,7 @@ namespace MQTTnet.Diagnostics
{
event EventHandler<MqttNetLogMessagePublishedEventArgs> LogMessagePublished;
void Trace<TSource>(string message, params object[] parameters);
void Verbose<TSource>(string message, params object[] parameters);
void Info<TSource>(string message, params object[] parameters);
Frameworks/MQTTnet.NetStandard/Diagnostics/MqttNetLogger.cs
+1 -1
View File
@@ -13,7 +13,7 @@ namespace MQTTnet.Diagnostics
public event EventHandler<MqttNetLogMessagePublishedEventArgs> LogMessagePublished;
public void Trace<TSource>(string message, params object[] parameters)
public void Verbose<TSource>(string message, params object[] parameters)
{
Publish<TSource>(MqttNetLogLevel.Verbose, null, message, parameters);
}
Frameworks/MQTTnet.NetStandard/Implementations/MqttClientAdapterFactory.cs
+15 -5
View File
@@ -8,18 +8,28 @@ namespace MQTTnet.Implementations
{
public class MqttClientAdapterFactory : IMqttClientAdapterFactory
{
public IMqttChannelAdapter CreateClientAdapter(IMqttClientChannelOptions options, IMqttNetLogger logger)
public IMqttChannelAdapter CreateClientAdapter(IMqttClientOptions options, IMqttNetLogger logger)
{
if (options == null) throw new ArgumentNullException(nameof(options));
switch (options)
var serializer = new MqttPacketSerializer { ProtocolVersion = options.ProtocolVersion };
switch (options.ChannelOptions)
{
case MqttClientTcpOptions tcpOptions:
return new MqttChannelAdapter(new MqttTcpChannel(tcpOptions), new MqttPacketSerializer(), logger);
{
return new MqttChannelAdapter(new MqttTcpChannel(tcpOptions), serializer, logger);
}
case MqttClientWebSocketOptions webSocketOptions:
return new MqttChannelAdapter(new MqttWebSocketChannel(webSocketOptions), new MqttPacketSerializer(), logger);
{
return new MqttChannelAdapter(new MqttWebSocketChannel(webSocketOptions), serializer, logger);
}
default:
throw new NotSupportedException();
{
throw new NotSupportedException();
}
}
}
}
Frameworks/MQTTnet.NetStandard/Implementations/MqttWebSocketChannel.cs
+1 -1
View File
@@ -9,7 +9,7 @@ using MQTTnet.Client;
namespace MQTTnet.Implementations
{
public sealed class MqttWebSocketChannel : IMqttChannel, IDisposable
public sealed class MqttWebSocketChannel : IMqttChannel
{
// ReSharper disable once MemberCanBePrivate.Global
// ReSharper disable once AutoPropertyCanBeMadeGetOnly.Global
Frameworks/MQTTnet.NetStandard/ManagedClient/ManagedMqttClient.cs
+1 -1
View File
@@ -244,7 +244,7 @@ namespace MQTTnet.ManagedClient
}
finally
{
_logger.Trace<ManagedMqttClient>("Stopped publishing messages.");
_logger.Verbose<ManagedMqttClient>("Stopped publishing messages.");
}
}
Frameworks/MQTTnet.NetStandard/Server/MqttApplicationMessageInterceptorContext.cs
+4
View File
@@ -11,5 +11,9 @@
public string ClientId { get; }
public MqttApplicationMessage ApplicationMessage { get; set; }
public bool AcceptPublish { get; set; } = true;
public bool CloseConnection { get; set; }
}
}
Frameworks/MQTTnet.NetStandard/Server/MqttClientDisconnectedEventArgs.cs
+4 -1
View File
@@ -4,11 +4,14 @@ namespace MQTTnet.Server
{
public class MqttClientDisconnectedEventArgs : EventArgs
{
public MqttClientDisconnectedEventArgs(ConnectedMqttClient client)
public MqttClientDisconnectedEventArgs(ConnectedMqttClient client, bool wasCleanDisconnect)
{
Client = client ?? throw new ArgumentNullException(nameof(client));
WasCleanDisconnect = wasCleanDisconnect;
}
public ConnectedMqttClient Client { get; }
public bool WasCleanDisconnect { get; }
}
}
Frameworks/MQTTnet.NetStandard/Server/MqttClientKeepAliveMonitor.cs
+1 -1
View File
@@ -81,7 +81,7 @@ namespace MQTTnet.Server
}
finally
{
_logger.Trace<MqttClientSession>("Client {0}: Stopped checking keep alive timeout.", _clientId);
_logger.Verbose<MqttClientSession>("Client {0}: Stopped checking keep alive timeout.", _clientId);
}
}
Frameworks/MQTTnet.NetStandard/Server/MqttClientPendingMessagesQueue.cs
+2 -2
View File
@@ -57,7 +57,7 @@ namespace MQTTnet.Server
_queue.Enqueue(packet);
_queueWaitSemaphore.Release();
_logger.Trace<MqttClientPendingMessagesQueue>("Enqueued packet (ClientId: {0}).", _clientSession.ClientId);
_logger.Verbose<MqttClientPendingMessagesQueue>("Enqueued packet (ClientId: {0}).", _clientSession.ClientId);
}
private async Task SendQueuedPacketsAsync(IMqttChannelAdapter adapter, CancellationToken cancellationToken)
@@ -96,7 +96,7 @@ namespace MQTTnet.Server
await adapter.SendPacketsAsync(_options.DefaultCommunicationTimeout, cancellationToken, new[] { packet }).ConfigureAwait(false);
_logger.Trace<MqttClientPendingMessagesQueue>("Enqueued packet sent (ClientId: {0}).", _clientSession.ClientId);
_logger.Verbose<MqttClientPendingMessagesQueue>("Enqueued packet sent (ClientId: {0}).", _clientSession.ClientId);
}
catch (Exception exception)
{
Frameworks/MQTTnet.NetStandard/Server/MqttClientSession.cs
+17 -6
View File
@@ -23,6 +23,7 @@ namespace MQTTnet.Server
private IMqttChannelAdapter _adapter;
private CancellationTokenSource _cancellationTokenSource;
private MqttApplicationMessage _willMessage;
private bool _wasCleanDisconnect;
public MqttClientSession(
string clientId,
@@ -55,7 +56,7 @@ namespace MQTTnet.Server
public bool IsConnected => _adapter != null;
public async Task RunAsync(MqttConnectPacket connectPacket, IMqttChannelAdapter adapter)
public async Task<bool> RunAsync(MqttConnectPacket connectPacket, IMqttChannelAdapter adapter)
{
if (connectPacket == null) throw new ArgumentNullException(nameof(connectPacket));
if (adapter == null) throw new ArgumentNullException(nameof(adapter));
@@ -64,6 +65,7 @@ namespace MQTTnet.Server
{
var cancellationTokenSource = new CancellationTokenSource();
_wasCleanDisconnect = false;
_willMessage = connectPacket.WillMessage;
_adapter = adapter;
_cancellationTokenSource = cancellationTokenSource;
@@ -84,9 +86,11 @@ namespace MQTTnet.Server
{
_logger.Error<MqttClientSession>(exception, "Client '{0}': Unhandled exception while processing client packets.", ClientId);
}
return _wasCleanDisconnect;
}
public async Task StopAsync()
public async Task StopAsync(bool wasCleanDisconnect = false)
{
try
{
@@ -95,6 +99,8 @@ namespace MQTTnet.Server
return;
}
_wasCleanDisconnect = wasCleanDisconnect;
_cancellationTokenSource?.Cancel(false);
PendingMessagesQueue.WaitForCompletion();
@@ -110,9 +116,10 @@ namespace MQTTnet.Server
finally
{
var willMessage = _willMessage;
if (willMessage != null)
_willMessage = null; // clear willmessage so it is send just once
if (willMessage != null && !wasCleanDisconnect)
{
_willMessage = null; // clear willmessage so it is send just once
await ApplicationMessageReceivedCallback(this, willMessage).ConfigureAwait(false);
}
}
@@ -246,7 +253,12 @@ namespace MQTTnet.Server
return HandleIncomingUnsubscribePacketAsync(adapter, unsubscribePacket, cancellationToken);
}
if (packet is MqttDisconnectPacket || packet is MqttConnectPacket)
if (packet is MqttDisconnectPacket)
{
return StopAsync(true);
}
if (packet is MqttConnectPacket)
{
return StopAsync();
}
@@ -262,7 +274,6 @@ namespace MQTTnet.Server
if (subscribeResult.CloseConnection)
{
await adapter.SendPacketsAsync(_options.DefaultCommunicationTimeout, cancellationToken, new[] { new MqttDisconnectPacket() }).ConfigureAwait(false);
await StopAsync().ConfigureAwait(false);
}
Frameworks/MQTTnet.NetStandard/Server/MqttClientSessionsManager.cs
+24 -16
View File
@@ -29,7 +29,7 @@ namespace MQTTnet.Server
}
public Action<ConnectedMqttClient> ClientConnectedCallback { get; set; }
public Action<ConnectedMqttClient> ClientDisconnectedCallback { get; set; }
public Action<ConnectedMqttClient, bool> ClientDisconnectedCallback { get; set; }
public Action<string, TopicFilter> ClientSubscribedTopicCallback { get; set; }
public Action<string, string> ClientUnsubscribedTopicCallback { get; set; }
public Action<string, MqttApplicationMessage> ApplicationMessageReceivedCallback { get; set; }
@@ -37,7 +37,9 @@ namespace MQTTnet.Server
public async Task RunSessionAsync(IMqttChannelAdapter clientAdapter, CancellationToken cancellationToken)
{
var clientId = string.Empty;
var wasCleanDisconnect = false;
MqttClientSession clientSession = null;
try
{
if (!(await clientAdapter.ReceivePacketAsync(_options.DefaultCommunicationTimeout, cancellationToken)
@@ -84,7 +86,7 @@ namespace MQTTnet.Server
ProtocolVersion = clientAdapter.PacketSerializer.ProtocolVersion
});
await clientSession.RunAsync(connectPacket, clientAdapter).ConfigureAwait(false);
wasCleanDisconnect = await clientSession.RunAsync(connectPacket, clientAdapter).ConfigureAwait(false);
}
catch (OperationCanceledException)
{
@@ -110,7 +112,8 @@ namespace MQTTnet.Server
ClientId = clientId,
ProtocolVersion = clientAdapter.PacketSerializer.ProtocolVersion,
PendingApplicationMessages = clientSession?.PendingMessagesQueue.Count ?? 0
});
},
wasCleanDisconnect);
}
}
@@ -156,8 +159,13 @@ namespace MQTTnet.Server
{
try
{
applicationMessage = InterceptApplicationMessage(senderClientSession, applicationMessage);
if (applicationMessage == null)
var interceptorContext = InterceptApplicationMessage(senderClientSession, applicationMessage);
if (interceptorContext.CloseConnection)
{
await senderClientSession.StopAsync().ConfigureAwait(false);
}
if (interceptorContext.ApplicationMessage == null || !interceptorContext.AcceptPublish)
{
return;
}
@@ -230,20 +238,20 @@ namespace MQTTnet.Server
}
}
private MqttApplicationMessage InterceptApplicationMessage(MqttClientSession senderClientSession, MqttApplicationMessage applicationMessage)
private MqttApplicationMessageInterceptorContext InterceptApplicationMessage(MqttClientSession senderClientSession, MqttApplicationMessage applicationMessage)
{
var interceptor = _options.ApplicationMessageInterceptor;
if (interceptor == null)
{
return applicationMessage;
}
var interceptorContext = new MqttApplicationMessageInterceptorContext(
senderClientSession?.ClientId,
applicationMessage);
var interceptor = _options.ApplicationMessageInterceptor;
if (interceptor == null)
{
return interceptorContext;
}
interceptor(interceptorContext);
return interceptorContext.ApplicationMessage;
return interceptorContext;
}
private MqttConnectReturnCode ValidateConnection(MqttConnectPacket connectPacket)
@@ -279,11 +287,11 @@ namespace MQTTnet.Server
clientSession.Dispose();
clientSession = null;
_logger.Trace<MqttClientSessionsManager>("Stopped existing session of client '{0}'.", connectPacket.ClientId);
_logger.Verbose<MqttClientSessionsManager>("Stopped existing session of client '{0}'.", connectPacket.ClientId);
}
else
{
_logger.Trace<MqttClientSessionsManager>("Reusing existing session of client '{0}'.", connectPacket.ClientId);
_logger.Verbose<MqttClientSessionsManager>("Reusing existing session of client '{0}'.", connectPacket.ClientId);
}
}
@@ -302,7 +310,7 @@ namespace MQTTnet.Server
_sessions[connectPacket.ClientId] = clientSession;
_logger.Trace<MqttClientSessionsManager>("Created a new session for client '{0}'.", connectPacket.ClientId);
_logger.Verbose<MqttClientSessionsManager>("Created a new session for client '{0}'.", connectPacket.ClientId);
}
return new GetOrCreateClientSessionResult { IsExistingSession = isExistingSession, Session = clientSession };
Frameworks/MQTTnet.NetStandard/Server/MqttRetainedMessagesManager.cs
+1 -1
View File
@@ -132,7 +132,7 @@ namespace MQTTnet.Server
if (!saveIsRequired)
{
_logger.Trace<MqttRetainedMessagesManager>("Skipped saving retained messages because no changes were detected.");
_logger.Verbose<MqttRetainedMessagesManager>("Skipped saving retained messages because no changes were detected.");
}
if (saveIsRequired && _options.Storage != null)
Frameworks/MQTTnet.NetStandard/Server/MqttServer.cs
+4 -4
View File
@@ -138,10 +138,10 @@ namespace MQTTnet.Server
ClientConnected?.Invoke(this, new MqttClientConnectedEventArgs(client));
}
private void OnClientDisconnected(ConnectedMqttClient client)
private void OnClientDisconnected(ConnectedMqttClient client, bool wasCleanDisconnect)
{
_logger.Info<MqttServer>("Client '{0}': Disconnected.", client.ClientId);
ClientDisconnected?.Invoke(this, new MqttClientDisconnectedEventArgs(client));
_logger.Info<MqttServer>("Client '{0}': Disconnected (clean={1}).", client.ClientId, wasCleanDisconnect);
ClientDisconnected?.Invoke(this, new MqttClientDisconnectedEventArgs(client, wasCleanDisconnect));
}
private void OnClientSubscribedTopic(string clientId, TopicFilter topicFilter)
@@ -162,7 +162,7 @@ namespace MQTTnet.Server
private void OnClientAccepted(object sender, MqttServerAdapterClientAcceptedEventArgs eventArgs)
{
eventArgs.SessionTask = Task.Run(
async () => await _clientSessionsManager.RunSessionAsync(eventArgs.Client, _cancellationTokenSource.Token).ConfigureAwait(false),
() => _clientSessionsManager.RunSessionAsync(eventArgs.Client, _cancellationTokenSource.Token),
_cancellationTokenSource.Token);
}
}