Changes with nginx 1.19.3 29 Sep 2020

*) Feature: the ngx_stream_set_module.

*) Feature: the "proxy_cookie_flags" directive.

*) Feature: the "userid_flags" directive.

*) Bugfix: the "stale-if-error" cache control extension was erroneously
applied if backend returned a response with status code 500, 502,
503, 504, 403, 404, or 429.

*) Bugfix: "[crit] cache file ... has too long header" messages might
appear in logs if caching was used and the backend returned responses
with the "Vary" header line.

*) Workaround: "[crit] SSL_write() failed" messages might appear in logs
when using OpenSSL 1.1.1.

*) Bugfix: "SSL_shutdown() failed (SSL: ... bad write retry)" messages
might appear in logs; the bug had appeared in 1.19.2.

*) Bugfix: a segmentation fault might occur in a worker process when
using HTTP/2 if errors with code 400 were redirected to a proxied
location using the "error_page" directive.

*) Bugfix: socket leak when using HTTP/2 and subrequests in the njs
module.


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