Okay thanks. I will look into how to make ESP-3 into a web client. I should still be able to trigger the ESP-3 relay via 192.168.0.21/2/ON with using a web client instead of server? Or will that need to be done differently with HTTP GET requests from ESP-1 to ESP-3? Also, not sure if it matters or not, the ESP-1 web server is a cookie authentication type server.