Here is a list of all variables with links to the files they belong to:

• coap : coapserver-with-observe.ino, coapserver.ino, coaptest.ino, esp32.ino, esp8266.ino
• LEDSTATE : coapserver.ino, esp32.ino, esp8266.ino
• mac : coapserver-with-observe.ino, coapserver.ino, coaptest.ino
• password : esp32.ino, esp8266.ino
• ssid : esp32.ino, esp8266.ino
• Udp : coapserver-with-observe.ino, coapserver.ino, coaptest.ino
• udp : esp32.ino, esp8266.ino