- New upstream release 6.3.2
- Security improvements
- Fixed an open redirect vulnerability in StaticFileHandler
under certain configurations.
- ``tornado.web``
- `.RequestHandler.set_cookie` once again accepts capitalized
keyword arguments for backwards compatibility. This is
deprecated and in Tornado 7.0 only lowercase arguments will
be accepted.
- What's new in Tornado 6.3.0
- The new `.Application` setting ``xsrf_cookie_name``
can now be used to take advantage of the ``__Host``
cookie prefix for improved security. To use it, add
``{"xsrf_cookie_name": "__Host-xsrf", "xsrf_cookie_kwargs":
{"secure": True}}`` to your `.Application` settings. Note
that this feature currently only works when HTTPS is used.
- `.WSGIContainer` now supports running the application in
a ``ThreadPoolExecutor`` so the event loop is no longer
blocked.
- `.AsyncTestCase` and `.AsyncHTTPTestCase`, which were
deprecated in Tornado 6.2, are no longer deprecated.
- WebSockets are now much faster at receiving large messages
split into many fragments.
- General changes
- Python 3.7 is no longer supported; the minimum supported .
Python version is 3.8 Python 3.12 is now supported .
- To avoid spurious deprecation warnings, users of Python
3.10 should upgrade to at least version 3.10.9, and users
of Python 3.11 should upgrade to at least version 3.11.1.
- Tornado submodules are now imported automatically on