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 What transports are supported? Does PubNub offer a self-hosted solution? Can I use my own domain for PubNub? Is there a limit to the number of channel groups in my PubNub key set? How do I check network connectivity?