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? What transports are supported? Does PubNub offer a self-hosted solution? Does PubNub use Amazon Messaging Services? Does PubNub provide WebRTC and video chat?