Previously, after sending SIGUSR2 to the original master process, and
the new master process gets ready, user has to send SIGQUIT to the
original master process to shut it down gracefully. With this commit,
the new master process sends SIGQUIT to the original master process
when it is ready to serve requests, eliminating for user to send
SIGQUIT manually.
This works nicely with systemd, because now you can replace nghttpx
binary with new one by "systemctl kill -s USR2 --kill-who=main
nghttpx".
To debug multi threaded configuration easier, we added current PID and
thread ID to error log. Previously, we didn't add date and time if
log level is NOTICE. In this change, we always write date and time
regardless of log level.
This commits enables HTTP/2 server push from HTTP/2 backend to be
relayed to HTTP/2 frontend. To use this feature, --http2-bridge or
--client is required. Server push via Link header field contiues to
work.
The control process handles signals, reads configuration, reads
private keys, and bind port (which may be privileged one). It never
drop privileges, so that it can execute new binary with the same
privilege. It forks worker process. The worker process handles all
incoming connections. It drops privilege.
Previously to create manual page for bundled programs, we use help2man
to create man page from program's help output. Then our man2rst.py
script converts man page to rst document. Sphinx generates html from
rst documents.
Now help2rst.py produces rst document from programs output. We use
Sphinx solely to produce both man pages and html files.
Tatsuhiro Tsujikawa
Syohei YOSHIDA