Does PubNub support the UDP protocol? Craig Conover November 04, 2020 22:56 Updated No. PubNub client libraries communicate over a TCP socket connection only. Related articles Does PubNub use a lot of battery power? Custom origin - what is it and how to use it Can I use my own domain for PubNub? What protocol does PubNub use? Can PubNub be used for realtime, multi-player games?