WebTransport
ELI5 — The Vibe Check
WebTransport is the next-gen alternative to WebSockets, built on HTTP/3 and QUIC. It supports both reliable streams AND unreliable datagrams — perfect for games and real-time apps where some packet loss is fine. It's WebSocket's cooler, faster younger sibling.
Real Talk
WebTransport is a browser API for bidirectional client-server communication over HTTP/3. Unlike WebSockets, it supports multiple independent streams, unreliable datagram delivery, and benefits from QUIC's connection migration and 0-RTT. Ideal for gaming, live streaming, and IoT applications.
When You'll Hear This
"WebTransport datagrams are perfect for our game — we don't need retransmission for position updates." / "We're migrating from WebSockets to WebTransport for the multiplexed streams and lower latency."
Related Terms
HTTP/3 Features
HTTP/3 ditches TCP for QUIC (built on UDP), which means no more head-of-line blocking, faster connections, and built-in encryption.
QUIC (Quick UDP Internet Connections)
QUIC is Google's invention that takes the speed of UDP and adds the reliability of TCP, all while encrypting everything.
Streaming Protocol
Streaming Protocols deliver data continuously instead of in one big chunk.
WebSocket
WebSocket is like upgrading a walkie-talkie from push-to-talk to a full phone call.