master
Mp4: rejecting unordered chunks in stsc atom.
HTTP/2: close connections initialized during graceful shutdown.
HTTP/3: fixed handling of zero-length literal field line.
Common tree insert function for QUIC and UDP connections.
Merged with the default branch.
Cache: keep c->body_start when Vary changes (ticket #2029).
Copyright updated.
Fixed request termination with AIO and subrequests (ticket #2555).
HTTP/3: added more compatibility checks for "listen ... quic".
HTTP/3: removed "http3" parameter of "listen" directive.
Avoid sending "Connection: keep-alive" when shutting down.
Adjusted Huffman coding debug logging, missed in 7977:336084ff943b.
Moved Huffman coding out of HTTP/2.
HTTP: removed unused r->port_start and r->port_end.
Postpone filter: prevented uninitialized r->out.
QUIC: modified HTTP version test.
All known output headers can be linked lists now.
Upstream: variables support in certificates.
Upstream: fixed usage of closed sockets with filter finalization.
Upstream: variables support in proxy_limit_rate and friends.
Upstream: excluded down servers from the next_upstream tries.
Variables: avoid possible buffer overrun with some "$sent_http_*".
Combining unknown headers during variables lookup (ticket #1316).