Changes with nginx 1.19.1 07 Jul 2020

*) Change: the "lingering_close", "lingering_time", and
"lingering_timeout" directives now work when using HTTP/2.

*) Change: now extra data sent by a backend are always discarded.

*) Change: now after receiving a too short response from a FastCGI
server nginx tries to send the available part of the response to the
client, and then closes the client connection.

*) Change: now after receiving a response with incorrect length from a
gRPC backend nginx stops response processing with an error.

*) Feature: the "min_free" parameter of the "proxy_cache_path",
"fastcgi_cache_path", "scgi_cache_path", and "uwsgi_cache_path"
directives.
Thanks to Adam Bambuch.

*) Bugfix: nginx did not delete unix domain listen sockets during
graceful shutdown on the SIGQUIT signal.

*) Bugfix: zero length UDP datagrams were not proxied.

*) Bugfix: proxying to uwsgi backends using SSL might not work.
Thanks to Guanzhong Chen.

*) Bugfix: in error handling when using the "ssl_ocsp" directive.

*) Bugfix: on XFS and NFS file systems disk cache size might be
calculated incorrectly.

*) Bugfix: "negative size buf in writer" alerts might appear in logs if
a memcached server returned a malformed response.


--
Maxim Dounin
http://nginx.org/
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