nhttp3 browser client

// connection

// fetch over HTTP/3

Browsers automatically use HTTP/3 when the server supports it via Alt-Svc.

// WebTransport (HTTP/3 native)

WebTransport provides bidirectional streams and datagrams over HTTP/3. Supported in Chrome 97+.

// streaming responses

HTTP/3 streams tokens without head-of-line blocking — perfect for LLM output.