GHA: update dependency gnutls/gnutls to v3.8.7

Closes #14554

transfer: Curl_sendrecv() and event related improvements

- Renames Curl_readwrite() to Curl_sendrecv() to reflect that it
is mainly about talking to the server, not reads or writes to

transfer: Curl_sendrecv() and event related improvements

- Renames Curl_readwrite() to Curl_sendrecv() to reflect that it
is mainly about talking to the server, not reads or writes to the
client. Add a `nowp` parameter since the single caller already
has this.
- Curl_sendrecv() now runs all possible operations whenever it is
called and either it had been polling sockets or the 'select_bits'
are set.
POLL_IN/POLL_OUT are not always directly related to send/recv
operations. Filters like HTTP/2, QUIC or TLS may monitor reverse
directions. If a transfer does not want to send (KEEP_SEND), it
will not do so, as before. Same for receives.
- Curl_update_timer() now checks the absolute timestamp of an expiry
and the last/new timeout to determine if the application needs
to stop/start/restart its timer. This fixes edge cases where
updates did not happen as they should have.
- improved --test-event curl_easy_perform() simulation to handle
situations where no sockets are registered but a timeout is
in place.
- fixed bug in events_socket() that complained about removing
a socket that was unknown, when indeed it had removed the socket
just before, only it was the last in the list
- fixed conncache's internal handle to carry the multi instance
(where the cache has one) so that operations on the closure handle
trigger event callbacks correctly.
- fixed conncache to not POLL_REMOVE a socket twice when a conneciton
was closed.

Closes #14561

show more ...

cmake: sync up version detection in Find modules

- use the same pattern across all Find modules:
- verify if the version header exists before reading it.
- use a single regex per

cmake: sync up version detection in Find modules

- use the same pattern across all Find modules:
- verify if the version header exists before reading it.
- use a single regex per lookup.
- sync regexes between Find modules.
- use generic temporary variable names.
- improve readability.
- make it simpler to transition to new CMake syntax in the future:
```cmake
file(STRINGS "${CARES_INCLUDE_DIR}/ares_version.h" _version_str REGEX "<...>")
unset(_version_str)
set(CARES_VERSION "${CMAKE_MATCH_1}")
```
Ref: https://cmake.org/cmake/help/latest/policy/CMP0159.html#policy:CMP0159

- fix zstd version detection to be CMake 3.7 compatible.
Required 3.9 before this patch, for the `CMAKE_MATCH_<n>` feature.
Follow-up to c5d506e9bbf0669d7605d1d00865ae7e229b2409 #12200

Follow-up to 4e2f3641f80e233738147d82218317f331369c50 #14548

Closes #14572

show more ...

cmake: tidy-up continues

- move variable dump to a GHA foldable group.
- minimize scope for an include().
- rename `HIDES_CURL_PRIVATE_SYMBOLS` to `CURL_HIDES_PRIVATE_SYMBOLS`,

cmake: tidy-up continues

- move variable dump to a GHA foldable group.
- minimize scope for an include().
- rename `HIDES_CURL_PRIVATE_SYMBOLS` to `CURL_HIDES_PRIVATE_SYMBOLS`,
to keep it in the curl namespace.
- drop quotes from a version number.
- add missing `Makefile.inc` var refs to comment.
- FindNGTCP2: rename internal var to underscore/lowercase.
- FindBearSSL, FindGSS: whitespace.

Closes #14571

show more ...

cmake: revert to `pkg_check_modules()`

Prefer `pkg_check_modules()` over `pkg_search_module()`.

`pkg_check_modules()` logs a line when there is a hit, and also warnings
if a sub

cmake: revert to `pkg_check_modules()`

Prefer `pkg_check_modules()` over `pkg_search_module()`.

`pkg_check_modules()` logs a line when there is a hit, and also warnings
if a sub-dependency is missing. In `QUIET` mode, both are silent.

The extra info is useful to see if a detection happened via
`pkg-config`.

Keep `pkg_search_module()` in `FindGSS`. We pass two dependencies
there and we want to keep stopping on the first one.

Partially reverts c2889a7b4180fc963ae30811f59ab547b6eb03cd #14388

Closes #14573

show more ...

cmake: fixup variable reference in FindZstd

Follow-up to 4e2f3641f80e233738147d82218317f331369c50 #14548

internals/SPLAY.md: internal API documentation

Closes #14563

curl: make the progress bar detect terminal width changes

And up the widest supported bar to 400 columns.

Fixes #14565
Reported-by: lolbinarycat on github
Closes #14570

cmake: add missing version detection to Find modules

- use `pkg-config` version when available and where it wasn't yet used.

- add manual version detection for dependencies where th

cmake: add missing version detection to Find modules

- use `pkg-config` version when available and where it wasn't yet used.

- add manual version detection for dependencies where this is possible
(via a public header) and where it wasn't done yet.

Closes #14548

show more ...

GHA/windows: delete redundant options, tidy up

- delete redundant `-DCURL_USE_LIBPSL=ON`.

- delete redundant `-DUSE_NGHTTP2=ON`.
Follow-up to 87aa4ebd821ebae0023df8658360c724e

GHA/windows: delete redundant options, tidy up

- delete redundant `-DCURL_USE_LIBPSL=ON`.

- delete redundant `-DUSE_NGHTTP2=ON`.
Follow-up to 87aa4ebd821ebae0023df8658360c724efcf5e00 #14136

- reorder options.

Closes #14569

show more ...

tidy-up: misc build, tests, `lib/macos.c`

- mkhelp.pl: drop unused assigment.
- Makefile.mk: update a comment.
- lib/macos.c: delete redundant block.
- fix two typos.

Cl

tidy-up: misc build, tests, `lib/macos.c`

- mkhelp.pl: drop unused assigment.
- Makefile.mk: update a comment.
- lib/macos.c: delete redundant block.
- fix two typos.

Closes #14558

show more ...

RELEASE-NOTES: synced

docs: remove ALTSVC.md, HSTS.md, HTTP2.md and PARALLEL-TRANSFERS.md

These are files and documentation for established functionality that
should by now be covered properly and completely

docs: remove ALTSVC.md, HSTS.md, HTTP2.md and PARALLEL-TRANSFERS.md

These are files and documentation for established functionality that
should by now be covered properly and completely in the standard
documentation and in everything curl. Having these extra files provides
duplicated information where they risk being out of sync.

Closes #14553

show more ...

rustls: add support for setting TLS version and ciphers

Add support for CURLOPT_SSLVERSION, CURLOPT_TLS13_CIPHERS and
CURLOPT_SSL_CIPHER_LIST.

Closes #14535

cmake: add wolfSSH support

Enable with CMake option `-DCURL_USE_WOLFSSH=ON`. Customize with
`-DWOLFSSH_INCLUDE_DIR=<path-to-wolfssh>/include`,
`-DWOLFSSH_LIBRARY=<path-to-wolfssh>/li

cmake: add wolfSSH support

Enable with CMake option `-DCURL_USE_WOLFSSH=ON`. Customize with
`-DWOLFSSH_INCLUDE_DIR=<path-to-wolfssh>/include`,
`-DWOLFSSH_LIBRARY=<path-to-wolfssh>/lib/libwolfssh.a`.

It requires the wolfSSL TLS backend.

Closes #14568

show more ...

cmake: TLS 1.3 warning only for bearssl and sectranp

Closes #14566

splay: use access functions, add asserts, use Curl_timediff

- add set/get functions for the custom data in a tree node

- use Curl_timediff for time comparisons instead of the custom

splay: use access functions, add asserts, use Curl_timediff

- add set/get functions for the custom data in a tree node

- use Curl_timediff for time comparisons instead of the custom macro, as they
do the exact same things.

- add asserts to catch mistakes better

- updated test 1309 accordingly

Closes #14562

show more ...

scorecard: tweak request measurements

Increase max-parallel up to 300, the curl max

Tweak output to just give the http response code

Closes #14564

docs/internals: new subdirectory

For libcurl internal APIs and concepts.

Closes #14552

test1707: output diff more for debugging differences in CI outputs

managen: wordwrap long example lines in ASCII output

The entire ASCII version of the manpage word wraps at a fixed column,
while example command lines can easily go wider than so.

managen: wordwrap long example lines in ASCII output

The entire ASCII version of the manpage word wraps at a fixed column,
while example command lines can easily go wider than so.

This change now makes manage work on wrapping long example command lines
to make them look nicer. And also to avoid triggering the build error
caused by too long lines in the output.

Quoted lines cannot be wrapped, so managen now errors out if they are
"too long". With this addition, the 'maxline' script is removed as it is
no longer needed.

Closes #14543

show more ...

cmake: fix find rustls

Follow-up to 2784801977e81f68c6f87f9509e64f332d74acab #14545
Closes #14567

multi: on socket callback error, remove socket hash entry nonetheless

Previously an error from the callback accidentally made libcurl keep the
hash entry which would lead to the entry re

multi: on socket callback error, remove socket hash entry nonetheless

Previously an error from the callback accidentally made libcurl keep the
hash entry which would lead to the entry remaining and then potentially
getting removed *again* which would lead to internal confusions.

This is an old issue (introduced in 2b3dd01b779e4eff6), caught by the new
asserts from c0233a35da81.

Closes #14557

show more ...

libcurl.pc: add reference to `libgsasl`

Closes #14556

tidy-up: misc spelling (bit, ASCII)

Closes #14559