Creating a config node

I'm making a config node that creates a tcp connection. If there is no node using the config node we created, the config should not create a TCP connection. How do I solve this problem?

So how can I find out the number of nodes using this config node?

Hi @sercancetin

Have a look at how the mqtt-broker config node handles this scenario.

It provides a pair of register and deregister functions that the regular mqtt in and mqtt out nodes can call as part of the normal lifecycle to notify the config node of their existence.

The config node can then decide if and when to start and stop the underlying connection.

Here's the register function: