HTTP/3

rpxy can serve HTTP/3 requests thanks to quinn, s2n-quic and hyperium/h3. To enable this experimental feature, add an entry experimental.h3 in your config.toml like follows. Then, any TLS-enabled application can be served with HTTP/3 in addition to HTTP/2 and HTTP/1.1 except for the applications with TLS client authentication.

[experimental.h3]
alt_svc_max_age = 3600             # sec
max_concurrent_connections = 512   # H3 connections per endpoint/listener
max_concurrent_bidistream = 100    # bidirectional streams per H3 connection
max_concurrent_unistream = 100     # unidirectional streams per H3 connection
max_idle_timeout = 10              # sec. 0 means an infinite timeout.

The HTTP/3 connection limit is independent of the global max_clients option, which covers HTTP/1.1 and HTTP/2 only: max_concurrent_connections caps HTTP/3 (QUIC) connections separately for each configured H3 endpoint/listener.

The request body size limit for HTTP/3 is the top-level request_max_body_size option, shared with HTTP/1.1 and HTTP/2.