- Prefer HTTP/2 by setting RequestOptions::VERSION => "2.0" so clients
  that respect PSR-7 request version will prefer HTTP/2.
- Add a curl hint (CURLOPT_HTTP_VERSION) to prefer HTTP/2 via ALPN
  (CURL_HTTP_VERSION_2TLS or CURL_HTTP_VERSION_2_0 fallback) while allowing
  automatic fallback to HTTP/1.1.
- Advertise Brotli ("br") in Accept-Encoding when the php-brotli extension
  is available (detected via function_exists('brotli_uncompress')), otherwise
  fall back to gzip.

Notes:
- The PSR-7 request version is used as a hint for HTTP client libraries;
  setting the version to "2.0" signals a preference for HTTP/2 at the request
  abstraction level.
- The curl option is defensive: it prefers HTTP/2 where libcurl supports it
  (via ALPN), but will not break on older libcurl/builds (uses defined()).

Compatibility:
- Fully backwards compatible: if the php-brotli extension is not present,
  no Brotli usage will occur and behaviour remains equivalent to previous
  (gzip).

Signed-off-by: ernolf <raphael.gradenwitz@googlemail.com>

Signed-off-by: ernolf <raphael.gradenwitz@googlemail.com>

Signed-off-by: ernolf <raphael.gradenwitz@googlemail.com>

Signed-off-by: Robin Appelman <robin@icewind.nl>

Signed-off-by: Raphael Gradenwitz <39901936+ernolf@users.noreply.github.com>

Signed-off-by: ernolf <raphael.gradenwitz@googlemail.com>

Reported at Transifex

Signed-off-by: rakekniven <2069590+rakekniven@users.noreply.github.com>
Signed-off-by: Benjamin Gaussorgues <benjamin.gaussorgues@nextcloud.com>

Signed-off-by: nextcloud-command <nextcloud-command@users.noreply.github.com>

Signed-off-by: Christoph Wurst <1374172+ChristophWurst@users.noreply.github.com>

fix(session): handle null logger

Signed-off-by: SebastianKrupinski <krupinskis05@gmail.com>

feat: also send x-user-id for dav responses

…ation-users

feat: restrict calendar invitation participants

perf(client): enable HTTP/2 and brotli support in internal HTTP client

Signed-off-by: Nextcloud bot <bot@nextcloud.com>

Signed-off-by: Julien Veyssier <julien-nc@posteo.net>