- update to 23.9.0 (CVE-2023-41419):
* Make ``gevent.select.select`` accept arbitrary iterables, not
just sequences. That is, you can now pass in a generator of file
descriptors instead of a realized list. Internally, arbitrary
iterables are copied into lists. This better matches what the
standard library does.
* On Python 3.11 and newer, opt out of Cython's fast exception
manipulation, which *may* be causing problems in certain
circumstances when combined with greenlets.
* On all versions of Python, adjust some error handling in the
default * -based loop. This fixes several assertion failures
on debug versions of CPython. Hopefully it has a positive
impact under real conditions.
* Make ``gevent.pywsgi`` comply more closely with the HTTP
specification for chunked transfer encoding. In particular,
we are much stricter about trailers, and trailers that are
invalid (too long or featuring disallowed characters) forcibly
close the connection to the client *after* the results have
been sent.
* Trailers otherwise continue to be ignored and are not
available to the WSGI application.
Previously, carefully crafted invalid trailers in chunked
requests on keep-alive connections might appear as two
requests to ``gevent.pywsgi``. Because this was handled
exactly as a normal keep-alive connection with two requests,
the WSGI application should handle it normally. However, if
you were counting on some upstream server to filter incoming
requests based on paths or header fields, and the upstream
server simply passed trailers through without
validating them, then this embedded second request would