WebTransport is a next-gen web protocol that layers on HTTP/2 and HTTP/3 to deliver multiplexed, bidirectional streams—both reliable and unreliable—over a single, TLS-secured connection. It fixes WebSockets’ single-stream limits and gRPC’s fire-and-forget issues, offering low-latency, client-initiated push without hacks like HTTP/2 push or constant polling.
By extending CONNECT and supporting datagram-style delivery, WebTransport taps into existing HTTP/2/3 deployments while unlocking real-time use cases—think gaming, live media, and interactive apps—that demand both speed and flexibility.
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