- Update to 1.19.3
* https://nginx.org/en/CHANGES
* Add the ngx_stream_set_module.
* Add the "proxy_cookie_flags" directive.
* Add the "userid_flags" directive.
* Fix 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.
* Fix "[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.
* Fix "[crit] SSL_write() failed" messages might appear in logs
when using OpenSSL 1.1.1.
* Fix "SSL_shutdown() failed (SSL: ... bad write retry)" messages
might appear in logs; the bug had appeared in 1.19.2.
* Fix 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.
* Fix socket leak when using HTTP/2 and subrequests in the njs module.