version: add "ECH" as a feature

If available

Follow-up to a362962b7
Closes #13378

CURLOPT_ECH: polish

- remove the pointer to build instructions, it won't work in manpages
- add see-also
- minor white space edits

Closes #13379

tidy-up: whitespace [ci skip]

mbedtls: fix building with v3 in CMake Unity mode

Before this patch the internal feature detection macro
`HAS_MBEDTLS_RESULT_CODE_BASED_FUNCTIONS` was defined in three files,
with an

mbedtls: fix building with v3 in CMake Unity mode

Before this patch the internal feature detection macro
`HAS_MBEDTLS_RESULT_CODE_BASED_FUNCTIONS` was defined in three files,
with an incomplete logic in one of them. In Unity mode that spilled
into another source file and broke the build.

Closes #13377

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cmake: add librtmp/rtmpdump option and detection

Add CMake option `USE_LIBRTMP`. Disabled by default.

This library requires OpenSSL TLS-backend when linked statically.

Foll

cmake: add librtmp/rtmpdump option and detection

Add CMake option `USE_LIBRTMP`. Disabled by default.

This library requires OpenSSL TLS-backend when linked statically.

Follow-up to 6eb9e65781fa1fd8a0bcfe0715187a3a35f09ae4 #13364
Closes #13373

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TLS: add support for ECH (Encrypted Client Hello)

An EXPERIMENTAL feature used with CURLOPT_ECH and --ech.

Closes #11922

RELEASE-NOTES: synced

multi: introduce SETUP state for better timeouts

Since we can go to the CONNECT state from PENDING, potentially multiple
times for a single transfer, this change introdues a SETUP state

multi: introduce SETUP state for better timeouts

Since we can go to the CONNECT state from PENDING, potentially multiple
times for a single transfer, this change introdues a SETUP state that
happens before CONNECT when doing a new transfer.

Now, doing a redirect on a handle goes back to SETUP (not CONNECT like
before) and we initilize the connect timeout etc in SETUP. Previously,
we would do it in CONNECT but that would make it unreliable in cases
where a transfer goes in and out between CONNECT and PENDING multiple
times.

SETUP is transient, so the handle never actually stays in that state.

Additionally: take care of timeouts of PENDING transfers in
curl_multi_perform()

Ref: #13227
Closes #13371

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cmake: forward `USE_LIBRTMP` option to C

Define in C `USE_LIBRTMP` if user requested it from cmake.

Closes #13364

curl_version_info: provide librtmp version

Ref: https://github.com/curl/curl/pull/13364#issuecomment-2054151942
Reported-by: talregev on github
Closes #13368

docs: clarify CURLOPT_MAXFILESIZE and CURLOPT_MAXFILESIZE_LARGE

The bounds of the size parameter were not specified, and nor was it
specified how to disable the maximum file size check.

docs: clarify CURLOPT_MAXFILESIZE and CURLOPT_MAXFILESIZE_LARGE

The bounds of the size parameter were not specified, and nor was it
specified how to disable the maximum file size check.

The documentation also incorrectly stated that CURLOPT_MAXFILESIZE
always returns CURLE_OK and that CURLOPT_MAXFILESIZE_LARGE only returns
CURLE_OK or CURLE_UNKNOWN_OPTION.

It also did not mention what the default value is, which is zero. This
commit updates the documentation to make note of all these things.

Closes #13372

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OS400: post-shellcheck changes adjustments

Build scripts must be executed by the os/400 shell (sh), not bash which
is a PASE program.

Shell function get_make_vars() escaping rew

OS400: post-shellcheck changes adjustments

Build scripts must be executed by the os/400 shell (sh), not bash which
is a PASE program.

Shell function get_make_vars() escaping reworked to match $() subcommand
construct.

Follow-up to 8a622baf9e9233241bbe93d6599c99cb46478614
Closes #13366

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OS400: tidy-up

Drop/fixup mods trying to make some syntax highlighters happier.

Follow-up to 8a622baf9e9233241bbe93d6599c99cb46478614 #13309
Closes #13362

multi: timeout handles even without connection

When there is a "change" in a multi handle and pending handles are moved
back to the main list to be retested if they can proceed further (

multi: timeout handles even without connection

When there is a "change" in a multi handle and pending handles are moved
back to the main list to be retested if they can proceed further (for
example a previous transfer completed or a connection has a confirmed
multiplexed state), the timeout check in multi_runsingle() would not
trigger because it required an established connection.

This could make a pending tranfer go back to pending state even though
it had been "in progress" for a longer time than permitted. By removing
the requirement for an associated connection, the timeout check will be
done proper even for transfers that has not yet been assigned one.

Ref #13227
Reported-by: Rahul Krishna M
Closes #13276

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mprintf: check fputc error rather than matching returned character

OS/400 ascii fputc wrapper deviates from the posix standard by the
fact that it returns the ebcdic encoding of the orig

mprintf: check fputc error rather than matching returned character

OS/400 ascii fputc wrapper deviates from the posix standard by the
fact that it returns the ebcdic encoding of the original ascii
character. Testing for a matching value for success will then always
fail.

This commit replaces the chariacter comparison by an explicit error
return check.

Follow-up to ef2cf58
Closes #13367

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ci: add CMake build variation, fixup libssh detection in `linux-old`

To test without c-ares and hit `easy_lock.h` on an old system. Use this
new build step to introduce small variations,

ci: add CMake build variation, fixup libssh detection in `linux-old`

To test without c-ares and hit `easy_lock.h` on an old system. Use this
new build step to introduce small variations, and also test libssh2.

Also add workaround to existing job to enable libssh. (CMake's generic
auto-detection doesn't seem to work here.):
```
CMake Warning at CMakeLists.txt:908 (find_package):
Could not find a package configuration file provided by "libssh" with any
of the following names:

libsshConfig.cmake
libssh-config.cmake
```
Ref: https://github.com/curl/curl/actions/runs/8661316091/job/23750974358#step:5:69

Closes #13361

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lib: merge `ENABLE_QUIC` C macro into `USE_HTTP3`

Before this patch `lib/curl_setup.h` defined these two macros right
next to each other, then the source code used them interchangeably.

lib: merge `ENABLE_QUIC` C macro into `USE_HTTP3`

Before this patch `lib/curl_setup.h` defined these two macros right
next to each other, then the source code used them interchangeably.

After this patch, `USE_HTTP3` guards all HTTP/3 / QUIC features.
(Like `USE_HTTP2` does for HTTP/2.) `ENABLE_QUIC` is no longer used.

This patch doesn't change the way HTTP/3 is enabled via autotools
or CMake. Builders who enabled HTTP/3 manually by defining both of
these macros via `CPPFLAGS` can now delete `-DENABLE_QUIC`.

Closes #13352

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build: prefer `USE_IPV6` macro internally (was: `ENABLE_IPV6`)

Before this patch, two macros were used to guard IPv6 features in curl
sources: `ENABLE_IPV6` and `USE_IPV6`. This patch ma

build: prefer `USE_IPV6` macro internally (was: `ENABLE_IPV6`)

Before this patch, two macros were used to guard IPv6 features in curl
sources: `ENABLE_IPV6` and `USE_IPV6`. This patch makes the source use
the latter for consistency with other similar switches.

`-DENABLE_IPV6` remains accepted for compatibility as a synonym for
`-DUSE_IPV6`, when passed to the compiler.

`ENABLE_IPV6` also remains the name of the CMake and `Makefile.vc`
options to control this feature.

Closes #13349

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DISTROS: mark rolling release distros

These are ones that are unlikely to have back-ported curl patches.

Closes #13353

mbedtls: cut off trailing newlines from debug logs

To avoid double newlines in the output.

Reported-by: Gisle Vanem
Fixes #13321
Closes #13356

RELEASE-NOTES: synced

CURLINFO_REQUEST_SIZE: fixed, add tests for transfer infos reported

- tests for 'size_request' and other stats reported, for
presence and consistency

Reported-by: Jonatan Vela

CURLINFO_REQUEST_SIZE: fixed, add tests for transfer infos reported

- tests for 'size_request' and other stats reported, for
presence and consistency

Reported-by: Jonatan Vela
Fixes #13269
Closes #13275

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dist: add files missing from release tarball

Closes #13346

ci: parallelize more, tidy up cmake commands (distcheck, macos)

Also enable `-DCURL_WERROR=ON` in the Linux cmake build test.

Closes #13343

docs: add CURLOPT_NOPROGRESS to CURLOPT_XFERINFOFUNCTION example

It's important to set `CURLOPT_NOPROGRESS` to `0` if you want your
transfer callback function, set by `CURLOPT_XFERINFOFU

docs: add CURLOPT_NOPROGRESS to CURLOPT_XFERINFOFUNCTION example

It's important to set `CURLOPT_NOPROGRESS` to `0` if you want your
transfer callback function, set by `CURLOPT_XFERINFOFUNCTION`, getting
called. To emphasize this to the users, add this to the code example.

Closes #13348

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