private void DispatchPublishPacket(MqttClientSession senderClientSession, MqttPublishPacket publishPacket)
{
foreach (var clientSession in _clientSessions.Values.ToList())
{
clientSession.EnqueuePublishPacket(senderClientSession, publishPacket);
}
}
public async Task DispatchApplicationMessageAsync(MqttClientSession senderClientSession, MqttApplicationMessage applicationMessage)
{
try
{
var interceptorContext = new MqttApplicationMessageInterceptorContext
{
ApplicationMessage = applicationMessage
};
_options.ApplicationMessageInterceptor?.Invoke(interceptorContext);
applicationMessage = interceptorContext.ApplicationMessage;
if (applicationMessage.Retain)
{
await _clientRetainedMessageManager.HandleMessageAsync(senderClientSession?.ClientId, applicationMessage).ConfigureAwait(false);
}
var eventArgs = new MqttApplicationMessageReceivedEventArgs(senderClientSession?.ClientId, applicationMessage);
ApplicationMessageReceived?.Invoke(this, eventArgs);
}
catch (Exception exception)
{
_logger.LogError(new EventId(), exception, "Error while processing application message");
}
lock (_sessions)
{
foreach (var clientSession in _sessions.Values.ToList())
{
clientSession.EnqueuePublishPacket(applicationMessage.ToPublishPacket());
}
}
}
private void DispatchPublishPacket(MqttClientSession senderClientSession, MqttPublishPacket publishPacket)
{
var eventArgs = new MqttApplicationMessageReceivedEventArgs(senderClientSession.ClientId, publishPacket.ToApplicationMessage());
ApplicationMessageReceived?.Invoke(this, eventArgs);
foreach (var clientSession in _clientSessions.Values.ToList())
{
clientSession.EnqueuePublishPacket(senderClientSession, publishPacket);
}
}
public void Enqueue(MqttClientSession senderClientSession, MqttPublishPacket publishPacket)
{
if (senderClientSession == null)
{
throw new ArgumentNullException(nameof(senderClientSession));
}
if (publishPacket == null)
{
throw new ArgumentNullException(nameof(publishPacket));
}
lock (_pendingPublishPackets)
{
_pendingPublishPackets.Add(new MqttClientPublishPacketContext(senderClientSession, publishPacket));
_gate.Set();
}
}
private async Task <GetOrCreateClientSessionResult> GetOrCreateClientSessionAsync(MqttConnectPacket connectPacket)
{
await _sessionsSemaphore.WaitAsync().ConfigureAwait(false);
try
{
var isSessionPresent = _sessions.TryGetValue(connectPacket.ClientId, out var clientSession);
if (isSessionPresent)
{
if (connectPacket.CleanSession)
{
_sessions.Remove(connectPacket.ClientId);
await clientSession.StopAsync();
clientSession = null;
_logger.Trace <MqttClientSessionsManager>("Stopped existing session of client '{0}'.", connectPacket.ClientId);
}
else
{
_logger.Trace <MqttClientSessionsManager>("Reusing existing session of client '{0}'.", connectPacket.ClientId);
}
}
var isExistingSession = true;
if (clientSession == null)
{
isExistingSession = false;
clientSession = new MqttClientSession(connectPacket.ClientId, _options, this, _logger);
_sessions[connectPacket.ClientId] = clientSession;
_logger.Trace <MqttClientSessionsManager>("Created a new session for client '{0}'.", connectPacket.ClientId);
}
return(new GetOrCreateClientSessionResult {
IsExistingSession = isExistingSession, Session = clientSession
});
}
finally
{
_sessionsSemaphore.Release();
}
}
public void EnqueuePublishPacket(MqttClientSession senderClientSession, MqttPublishPacket publishPacket)
{
if (senderClientSession == null)
{
throw new ArgumentNullException(nameof(senderClientSession));
}
if (publishPacket == null)
{
throw new ArgumentNullException(nameof(publishPacket));
}
if (!_subscriptionsManager.IsTopicSubscribed(publishPacket))
{
return;
}
_messageQueue.Enqueue(senderClientSession, publishPacket);
MqttTrace.Verbose(nameof(MqttClientSession), $"Client '{_identifier}: Enqueued pending publish packet.");
}
public void DispatchPublishPacket(MqttClientSession senderClientSession, MqttPublishPacket publishPacket)
{
try
{
var eventArgs = new MqttApplicationMessageReceivedEventArgs(senderClientSession?.ClientId, publishPacket.ToApplicationMessage());
ApplicationMessageReceived?.Invoke(this, eventArgs);
}
catch (Exception exception)
{
MqttTrace.Error(nameof(MqttClientSessionsManager), exception, "Error while processing application message");
}
lock (_syncRoot)
{
foreach (var clientSession in _clientSessions.Values.ToList())
{
clientSession.EnqueuePublishPacket(publishPacket);
}
}
}
public void DispatchApplicationMessage(MqttClientSession senderClientSession, MqttApplicationMessage applicationMessage)
{
try
{
var eventArgs = new MqttApplicationMessageReceivedEventArgs(senderClientSession?.ClientId, applicationMessage);
ApplicationMessageReceived?.Invoke(this, eventArgs);
}
catch (Exception exception)
{
_logger.LogError(new EventId(), exception, "Error while processing application message");
}
lock (_clientSessions)
{
foreach (var clientSession in _clientSessions.Values.ToList())
{
clientSession.EnqueuePublishPacket(applicationMessage.ToPublishPacket());
}
}
}
private GetOrCreateClientSessionResult GetOrCreateClientSession(MqttConnectPacket connectPacket)
{
lock (_syncRoot)
{
MqttClientSession clientSession;
var isSessionPresent = _clientSessions.TryGetValue(connectPacket.ClientId, out clientSession);
if (isSessionPresent)
{
if (connectPacket.CleanSession)
{
_clientSessions.Remove(connectPacket.ClientId);
clientSession.Dispose();
clientSession = null;
MqttTrace.Verbose(nameof(MqttClientSessionsManager), $"Disposed existing session of client '{connectPacket.ClientId}'.");
}
else
{
MqttTrace.Verbose(nameof(MqttClientSessionsManager), $"Reusing existing session of client '{connectPacket.ClientId}'.");
}
}
var isExistingSession = true;
if (clientSession == null)
{
isExistingSession = false;
clientSession = new MqttClientSession(connectPacket.ClientId, _options, DispatchPublishPacket);
_clientSessions[connectPacket.ClientId] = clientSession;
MqttTrace.Verbose(nameof(MqttClientSessionsManager), $"Created a new session for client '{connectPacket.ClientId}'.");
}
return(new GetOrCreateClientSessionResult {
IsExistingSession = isExistingSession, Session = clientSession
});
}
}
public MqttClientPendingMessagesQueue(MqttServerOptions options, MqttClientSession session, ILogger <MqttClientPendingMessagesQueue> logger)
{
_logger = logger ?? throw new ArgumentNullException(nameof(logger));
_session = session ?? throw new ArgumentNullException(nameof(session));
_options = options ?? throw new ArgumentNullException(nameof(options));
}
public MqttClientPublishPacketContext(MqttClientSession senderClientSession, MqttPublishPacket publishPacket)
{
SenderClientSession = senderClientSession ?? throw new ArgumentNullException(nameof(senderClientSession));
PublishPacket = publishPacket ?? throw new ArgumentNullException(nameof(publishPacket));
}