private void PublishThread()
{
while (this.isRunning)
{
try
{
var publish = (MqttMsgPublish)this.publishQueue.Take();
if (publish != null)
{
Interlocked.Increment(ref numberOfMessagesPublished);
// get all subscriptions for a topic
var subscriptions = MqttSubscriberManager.GetSubscriptionsByTopic(publish.Topic);
foreach (var subscription in subscriptions)
{
var qosLevel = (subscription.QosLevel < publish.QosLevel) ? subscription.QosLevel : publish.QosLevel;
// send PUBLISH message to the current subscriber
MqttMessageToClientConnectionManager.Publish(subscription.ClientConnection, publish.Topic, publish.Message, qosLevel, publish.Retain);
}
}
}
catch (Exception exception)
{
logger.LogException(this, exception);
}
}
}
private static void SubscribersForRetainedThread()
{
while (isRunning)
{
try
{
var subscription = SubscribersForRetained.Take();
var query = from p in RetainedMessages
where (new Regex(subscription.Topic)).IsMatch(p.Key)
// check for topics based also on wildcard with regex
select p.Value;
foreach (MqttMsgPublish retained in query)
{
var qosLevel = (subscription.QosLevel < retained.QosLevel) ? subscription.QosLevel : retained.QosLevel;
// send PUBLISH message to the current subscriber
MqttMessageToClientConnectionManager.Publish(subscription.ClientConnection, retained.Topic, retained.Message, qosLevel, retained.Retain);
}
}
catch (Exception)
{
throw;
}
}
}
private void ClientsForSessionThread()
{
while (isRunning)
{
try
{
string clientId = this.clientsForSession.Take();
MqttBrokerSession session = MqttSessionManager.GetSession(clientId);
MqttMsgPublish outgoingMsg;
while (session.OutgoingMessages.TryDequeue(out outgoingMsg))
{
var query = from s in session.Subscriptions
where (new Regex(s.Topic)).IsMatch(outgoingMsg.Topic)
// check for topics based also on wildcard with regex
select s;
MqttSubscription subscription = query.FirstOrDefault();
if (subscription != null)
{
var qosLevel = (subscription.QosLevel < outgoingMsg.QosLevel) ? subscription.QosLevel : outgoingMsg.QosLevel;
MqttMessageToClientConnectionManager.Publish(subscription.ClientConnection, outgoingMsg.Topic, outgoingMsg.Message, qosLevel, outgoingMsg.Retain);
}
}
}
catch (Exception exception)
{
logger.LogException(this, exception);
}
}
}