HTTP/3 over QUIC

The HTTP layer, called HTTP/3, does HTTP-style transports, including HTTPheader compression using QPACK - which is similar to the HTTP/2 compressionnamed HPACK.

The HPACK algorithm depends on an ordered delivery of streams so it was notpossible to reuse it for HTTP/3 without modifications since QUIC offersstreams that can be delivered out of order. QPACK can be seen as theQUIC-adapted version of HPACK.