I have a working example up and running, using an ESP32 as a TCP client connected with a TCP server node in node red (running on a raspberry pi). The client sends basic messages to the server, and I can see these received messages in node red with the debug node (Great! So far, no problems).
Now, is there an example for sending a message from the server to the client? For instance, let's say I create a node red dashboard on the TCP server, and when a user clicks a button on the dashboard, a message is sent from TCP server to TCP client to "set GPIO3 high on the ESP32". Is there a way to do this?