Changes with nginx 1.19.7 16 Feb 2021

*) Change: connections handling in HTTP/2 has been changed to better
match HTTP/1.x; the "http2_recv_timeout", "http2_idle_timeout", and
"http2_max_requests" directives have been removed, the
"keepalive_timeout" and "keepalive_requests" directives should be
used instead.

*) Change: the "http2_max_field_size" and "http2_max_header_size"
directives have been removed, the "large_client_header_buffers"
directive should be used instead.

*) Feature: now, if free worker connections are exhausted, nginx starts
closing not only keepalive connections, but also connections in
lingering close.

*) Bugfix: "zero size buf in output" alerts might appear in logs if an
upstream server returned an incorrect response during unbuffered
proxying; the bug had appeared in 1.19.1.

*) Bugfix: HEAD requests were handled incorrectly if the "return"
directive was used with the "image_filter" or "xslt_stylesheet"
directives.

*) Bugfix: in the "add_trailer" directive.


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