public void EnqueueApplicationMessage(MqttClientSession senderClientSession, MqttPublishPacket publishPacket)
{
if (publishPacket == null)
{
throw new ArgumentNullException(nameof(publishPacket));
}
_messageQueue.Add(new MqttEnqueuedMessage(senderClientSession, publishPacket), _cancellationToken);
}
public MqttClientPendingPacketsQueue(IMqttServerOptions options, MqttClientSession clientSession, IMqttNetChildLogger logger)
{
if (logger == null)
{
throw new ArgumentNullException(nameof(logger));
}
_options = options ?? throw new ArgumentNullException(nameof(options));
_clientSession = clientSession ?? throw new ArgumentNullException(nameof(clientSession));
_logger = logger.CreateChildLogger(nameof(MqttClientPendingPacketsQueue));
}
private MqttMessageInterceptorContext InterceptApplicationMessage(MqttClientSession sender, MqttMessage applicationMessage)
{
var interceptor = _options.ApplicationMessageInterceptor;
if (interceptor == null)
{
return(null);
}
var interceptorContext = new MqttMessageInterceptorContext(sender?.ClientId, applicationMessage);
interceptor(interceptorContext);
return(interceptorContext);
}
public void EnqueueApplicationMessage(MqttClientSession senderClientSession, MqttPublishPacket publishPacket)
{
if (publishPacket == null)
{
throw new ArgumentNullException(nameof(publishPacket));
}
var checkSubscriptionsResult = _subscriptionsManager.CheckSubscriptions(publishPacket.Topic, publishPacket.QualityOfServiceLevel);
if (!checkSubscriptionsResult.IsSubscribed)
{
return;
}
publishPacket = new MqttPublishPacket
{
Topic = publishPacket.Topic,
Payload = publishPacket.Payload,
QualityOfServiceLevel = checkSubscriptionsResult.QualityOfServiceLevel,
Retain = publishPacket.Retain,
Dup = false
};
if (publishPacket.QualityOfServiceLevel > 0)
{
publishPacket.PacketIdentifier = _packetIdentifierProvider.GetNewPacketIdentifier();
}
if (_options.ClientMessageQueueInterceptor != null)
{
var context = new MqttClientMessageQueueInterceptorContext(
senderClientSession?.ClientId,
ClientId,
publishPacket.ToApplicationMessage());
_options.ClientMessageQueueInterceptor?.Invoke(context);
if (!context.AcceptEnqueue || context.ApplicationMessage == null)
{
return;
}
publishPacket.Topic = context.ApplicationMessage.Topic;
publishPacket.Payload = context.ApplicationMessage.Payload;
publishPacket.QualityOfServiceLevel = context.ApplicationMessage.QualityOfServiceLevel;
}
_pendingPacketsQueue.Enqueue(publishPacket);
}
private PrepareClientSessionResult PrepareClientSession(MqttConnectPacket connectPacket)
{
lock (_sessions)
{
var isSessionPresent = _sessions.TryGetValue(connectPacket.ClientId, out var clientSession);
if (isSessionPresent)
{
if (connectPacket.CleanSession)
{
_sessions.Remove(connectPacket.ClientId);
clientSession.Stop(MqttClientDisconnectType.Clean);
clientSession.Dispose();
clientSession = null;
_logger.Verbose("Stopped existing session of client '{0}'.", connectPacket.ClientId);
}
else
{
_logger.Verbose("Reusing existing session of client '{0}'.", connectPacket.ClientId);
}
}
var isExistingSession = true;
if (clientSession == null)
{
isExistingSession = false;
clientSession = new MqttClientSession(connectPacket.ClientId, _options, this, _retainedMessagesManager, _eventDispatcher, _logger);
_sessions[connectPacket.ClientId] = clientSession;
_logger.Verbose("Created a new session for client '{0}'.", connectPacket.ClientId);
}
return(new PrepareClientSessionResult {
IsExistingSession = isExistingSession, Session = clientSession
});
}
}
public MqttClientSessionStatus(MqttClientSessionsManager sessionsManager, MqttClientSession session)
{
_sessionsManager = sessionsManager;
_session = session;
}