A bug-fix release.
ASGI
The ASGI worker now announces Connection: close on HTTP/1.1 when it will not
reuse the connection. Previously it closed the socket without the header when
the client sent Connection: close, keepalive was disabled, the worker was
shutting down, or the response tripped max_requests, so a client treated the
response as persistent and reused a socket the server had already closed. An
app-supplied Connection header is left alone; HTTP/2 and error responses are
unaffected.
Full changelog: https://github.com/benoitc/gunicorn/blob/master/docs/content/news.md