public static void ProcessInternalEventQueue(MqttClientConnection clientConnection)
{
if (!clientConnection.IsRunning)
{
return;
}
InternalEvent internalEvent;
if (clientConnection.EventQueue.TryDequeue(out internalEvent))
{
MqttMsgBase msg = ((MsgInternalEvent)internalEvent).Message;
if (msg != null)
{
switch (msg.Type)
{
// CONNECT message received
case MqttMsgBase.MQTT_MSG_CONNECT_TYPE:
clientConnection.OnMqttMsgConnected((MqttMsgConnect)msg);
break;
// SUBSCRIBE message received
case MqttMsgBase.MQTT_MSG_SUBSCRIBE_TYPE:
MqttMsgSubscribe subscribe = (MqttMsgSubscribe)msg;
clientConnection.OnMqttMsgSubscribeReceived(subscribe.MessageId, subscribe.Topics, subscribe.QoSLevels);
break;
// SUBACK message received
case MqttMsgBase.MQTT_MSG_SUBACK_TYPE:
OnMqttMsgSubscribed(clientConnection, (MqttMsgSuback)msg);
break;
// PUBLISH message received
case MqttMsgBase.MQTT_MSG_PUBLISH_TYPE:
// PUBLISH message received in a published internal event, no publish succeeded
if (internalEvent.GetType() == typeof(MsgPublishedInternalEvent))
{
OnMqttMsgPublished(clientConnection, msg.MessageId, false);
}
else
{
// raise PUBLISH message received event
clientConnection.OnMqttMsgPublishReceived((MqttMsgPublish)msg);
}
break;
// (PUBACK received for QoS Level 1)
case MqttMsgBase.MQTT_MSG_PUBACK_TYPE:
OnMqttMsgPublished(clientConnection, msg.MessageId, true);
break;
// (PUBREL received for QoS Level 2)
case MqttMsgBase.MQTT_MSG_PUBREL_TYPE:
clientConnection.OnMqttMsgPublishReceived((MqttMsgPublish)msg);
break;
// (PUBCOMP received for QoS Level 2)
case MqttMsgBase.MQTT_MSG_PUBCOMP_TYPE:
OnMqttMsgPublished(clientConnection, msg.MessageId, true);
break;
// UNSUBSCRIBE message received from client
case MqttMsgBase.MQTT_MSG_UNSUBSCRIBE_TYPE:
MqttMsgUnsubscribe unsubscribe = (MqttMsgUnsubscribe)msg;
OnMqttMsgUnsubscribeReceived(clientConnection, unsubscribe.MessageId, unsubscribe.Topics);
break;
// UNSUBACK message received
case MqttMsgBase.MQTT_MSG_UNSUBACK_TYPE:
OnMqttMsgUnsubscribed(clientConnection, msg.MessageId);
break;
// DISCONNECT message received from client
case MqttMsgBase.MQTT_MSG_DISCONNECT_TYPE:
OnMqttMsgDisconnected(clientConnection);
break;
}
}
}
// all events for received messages dispatched, check if there is closing connection
if ((clientConnection.EventQueue.Count == 0) && clientConnection.IsConnectionClosing)
{
// client raw disconnection
clientConnection.OnConnectionClosed();
}
}