master
Events: validate descriptor before FD_SET()
QUIC: log RESET_STREAM final size as a decimal number
QUIC: automatically add and never delete stream events.
Merged with the default branch.
Core: added support for TCP keepalive parameters on macOS.
Introduced the "keepalive_time" directive.
Events: support for SO_SNDBUF on outbound peer connections
Style.
Format specifier fixes in error logging
SSL: add $ssl_sigalgs variable
SSL: fixed "key values mismatch" with object cache inheritance.
OCSP: resolve cleanup on connection close
Upstream: fixed usage of closed sockets with filter finalization.
Modules compatibility: compatibility with NGX_THREADS.
SSL: reworked posted next events again.
Core: added the ngx_rbtree_data() macro.
Cancelable timers are now preserved if there are other timers.
Common tree insert function for QUIC and UDP connections.