WebTransport is a next-gen protocol that sits on top of HTTP/2 and HTTP/3 to deliver true multiplexed, bidirectional communication from the browser. It fixes WebSockets’ head-of-line blocking and gRPC’s overhead by offering both reliable and unreliable streams—all secured with TLS by default—while leveraging the proven deployment of HTTP/2/3.
In the video, Hussein Nasser walks through why HTTP/2 push never caught on, how Extended CONNECT opens the door for WebTransport (spoiler: it won’t upgrade over HTTP/1.1!), and even why YouTube’s notification system still struggles. By combining modern transport features with familiar web tech, WebTransport is set to revolutionize real-time web apps.
Watch on YouTube
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