//Callback for MQTT subscription.
async void IServiceCallback.MQTTSubscribe(String topic)
{
await mqttClientSemaphore.WaitAsync();
try
{
if (m_topicSet.Contains(topic))
{
return;
}
else
{
ServiceLogic.ManagedMqttSubscribe(managedMqtt, topic);
m_topicSet.Add(topic);
}
}
finally
{
mqttClientSemaphore.Release();
}
}