viewforum.php?f=38
The documentation and downloads are all to be found here:
https://www.esp8266basic.com/
Some samples using UDP:
viewtopic.php?f=42&t=14117&hilit=udp
Udp Code to switch a relay between master and slave:
viewtopic.php?f=41&t=11335&p=62711&hilit=udp#p62711
And a simple UDP send and receive script:
viewtopic.php?f=40&t=13449&p=61383&hilit=udp#p61383
Just dive into ESP-Basic it is very easy to use
Luc