Now "listen" directve has a new "quic" parameter which enables QUIC protocol
for the address. Further, to enable HTTP/3, a new directive "http3" is
introduced. The hq-interop protocol is enabled by "http3_hq" as before.
Now application protocol is chosen by ALPN.
Previously used "http3" parameter of "listen" is deprecated.
The connection is automatically switched to this mode by transport layer when
there are no non-cancelable streams. Currently, cancelable streams are
HTTP/3 encoder/decoder/control streams.
Now ngx_quic_stream_t is decoupled from ngx_connection_t in a way that it
can persist after connection is closed by application. During this period,
server is expecting stream final size from client for correct flow control.
Also, buffered output is sent to client as more flow control credit is granted.
Previously, closure detection for server-initiated uni streams was not properly
implemented. Instead, HTTP/3 code relied on QUIC code posting the read event
and setting rev->error when it needed to close the stream. Then, regular
uni stream read handler called c->recv() and received error, which closed the
stream. This was an ad-hoc solution. If, for whatever reason, the read
handler was called earlier, c->recv() would return 0, which would also close
the stream.
Now server-initiated uni streams have a separate read event handler for
tracking stream closure. The handler calls c->recv(), which normally returns
0, but may return error in case of closure.
ngx_http_v3_tables.h and ngx_http_v3_tables.c are renamed to
ngx_http_v3_table.h and ngx_http_v3_table.c to better match HTTP/2 code.
ngx_http_v3_streams.h and ngx_http_v3_streams.c are renamed to
ngx_http_v3_uni.h and ngx_http_v3_uni.c to better match their content.
2021-12-07 13:01:28 +03:00
Renamed from src/http/v3/ngx_http_v3_streams.c (Browse further)
Roman Arutyunyan