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Sergey Kandaurov 6915d2fb2e HTTP/2: removed server push (ticket #2432).
Although it has better implementation status than HTTP/3 server push,
it remains of limited use, with adoption numbers seen as negligible.
Per IETF 102 materials, server push was used only in 0.04% of sessions.
It was considered to be "difficult to use effectively" in RFC 9113.
Its use is further limited by badly matching to fetch/cache/connection
models in browsers, see related discussions linked from [1].

Server push was disabled in Chrome 106 [2].

The http2_push, http2_push_preload, and http2_max_concurrent_pushes
directives are made obsolete.  In particular, this essentially reverts
7201:641306096f5b and 7207:3d2b0b02bd3d.

[1] https://jakearchibald.com/2017/h2-push-tougher-than-i-thought/
[2] https://chromestatus.com/feature/6302414934114304
2023-06-08 16:56:46 +04:00
auto HTTP/2: removed server push (ticket #2432). 2023-06-08 16:56:46 +04:00
conf MIME: added image/avif type. 2021-10-25 20:49:15 +03:00
contrib Contrib: vim syntax, update core and 3rd party module directives. 2022-06-18 15:54:40 +03:00
docs nginx-1.25.0-RELEASE 2023-05-23 18:08:19 +03:00
misc Added stream modules realip and ssl_preread to win32 builds. 2023-04-17 14:08:00 +04:00
src HTTP/2: removed server push (ticket #2432). 2023-06-08 16:56:46 +04:00
.hgtags release-1.25.0 tag 2023-05-23 18:08:20 +03:00