TL;DR

WebTransport is a next-gen web protocol that blends the best of HTTP/2 and HTTP/3 to deliver secure, multiplexed, bidirectional streams—both reliable and unreliable—over a single TLS-protected connection. It fixes WebSockets’ lack of flexibility and gRPC’s rigidity, offering low-latency, real-time data flows without sacrificing security or scalability.

In the video, you’ll see a quick history of how we got here (from simple HTTP to WebSockets, HTTP/2/3 and gRPC), a deep dive into WebTransport’s upgrade path and “extended CONNECT” trick, plus why older tricks like HTTP/2 Push fizzled out and how proxies can (or can’t) handle this new magic.

Watch on YouTube