gunicorn 19.0.0

Gunicorn 19.0 has been released

on Python PyPI

Gunicorn 19.0 is a major release with new features and fixes. This version improve a lot the usage of Gunicorn with python 3 by adding two new workers to it: gthread a fully threaded async worker using futures and gaiohttp a worker using asyncio.

Breaking Changes

Switch QUIT and TERM signals

With this change, when gunicorn receives a QUIT all the workers are
killed immediately and exit and TERM is used for the graceful shutdown.

Note: the old behaviour was based on the NGINX but the new one is more
correct according the following doc:

https://www.gnu.org/software/libc/manual/html_node/Termination-Signals.html

also it is complying with the way the signals are sent by heroku:

https://devcenter.heroku.com/articles/python-faq#what-constraints-exist-when-developing-applications-on-heroku

Deprecations

run_gunicorn, gunicorn_django and gunicorn_paster are now completely deprecated and will be removed in the next release. Use the gunicorn command instead.

Changes:

core

• add aiohttp worker named gaiohttp using asyncio. Full async worker
  on python 3.
• fix HTTP-violating excess whitespace in write_error output
• fix: try to log what happened in the worker after a timeout, add a
  worker_abort hook on SIGABRT signal.
• fix: save listener socket name in workers so we can handle buffered
  keep-alive requests after the listener has closed.
• add on_exit hook called just before exiting gunicorn.
• add support for python 3.4
• fix: do not swallow unexpected errors when reaping
• fix: remove incompatible SSL option with python 2.6
• add new async gthread worker and --threads options allows to set multiple
  threads to listen on connection
• deprecate gunicorn_django and gunicorn_paster
• switch QUIT and TERM signal
• reap workers in SIGCHLD handler
• add universal wheel support
• use email.utils.formatdate in gunicorn.util.http_date
• deprecate the --debug option
• fix: log exceptions that occur after response start …
• allows loading of applications from .pyc files (#693)
• fix: issue #691, raw_env config file parsing
• use a dynamic timeout to wait for the optimal time. (Reduce power
  usage)
• fix python3 support when notifying the arbiter
• add: honor $WEB_CONCURRENCY environment variable. Useful for heroku
  setups.
• add: include tz offset in access log
• add: include access logs in the syslog handler.
• add --reload option for code reloading
• add the capability to load gunicorn.base.Application without the loading of the arguments of the command line. It allows you to embed gunicorn in your own application.
• improve: set wsgi.multithread to True for async workers
• fix logging: make sure to redirect wsgi.errors when needed
• add: syslog logging can now be done to a unix socket
• fix logging: don't try to redirect stdout/stderr to the logfile.
• fix logging: don't propagate log
• improve logging: file option can be overriden by the gunicorn options --error-logfile and --access-logfile if they are given.
• fix: dont' override SERVER_* by the Host header
• fix: handle_error
• add more option to configure SSL
• fix: sendfile with SSL
• add: worker_int callback (to react on SIGTERM)
• fix: don't depend on entry point for internal classes, now absolute
  modules path can be given.
• fix: Error messages are now encoded in latin1
• fix: request line length check
• improvement: proxy_allow_ips: Allow proxy protocol if "*" specified
• fix: run worker's setup method before setting num_workers
• fix: FileWrapper inherit from object now
• fix: Error messages are now encoded in latin1
• fix: don't spam the console on SIGWINCH.
• fix: logging -don't stringify T and D logging atoms (#621)
• add support for the latest django version
• deprecate run_gunicorn django option
• fix: sys imported twice

gevent worker

• fix: make sure to stop all listeners
• fix: monkey patching is now done in the worker
• fix: "global name 'hub' is not defined"
• fix: reinit hub on old versions of gevent
• support gevent 1.0
• fix: add subprocess in monket patching
• fix: add support for multiple listener

eventlet worker

• fix: merge duplicate EventletWorker.init_process method (fixes #657)
• fix: missing errno import for eventlet sendfile patch
• fix: add support for multiple listener

tornado worker

• add gracefull stop support

Full changelog is available here:

18.0...19.0

More

You can find the documentation here:

http://docs.gunicorn.org/en/19.0/

Latest version is also available on Pypi:

https://pypi.python.org/pypi/gunicorn/19.0.0