NTLM_WB: delete remains in tests, docs updates

Also update more docs to reflect the removal of NTLM_WB.

Follow-up to 50def7c881ba560ab6e0235990e8f07fa69f4bc8 #13249
Closes #14832

getinfo: add CURLINFO_POSTTRANSFER_TIME_T

Returns the time, in microseconds, from the start until the last byte is
sent by libcurl (i.e. the request is sent off).

Closes #14189

tcpkeepalive: add CURLOPT_TCP_KEEPCNT and --keepalive-cnt

Closes #13885

urlapi: add CURLU_NO_GUESS_SCHEME

Used for extracting:

- when used asking for a scheme, it will return CURLUE_NO_SCHEME if the
stored information was a guess

- when u

urlapi: add CURLU_NO_GUESS_SCHEME

Used for extracting:

- when used asking for a scheme, it will return CURLUE_NO_SCHEME if the
stored information was a guess

- when used asking for a URL, the URL is returned without a scheme, like
when previously given to the URL parser when it was asked to guess

- as soon as the scheme is set explicitly, it is no longer internally
marked as guessed

The idea being:

1. allow a user to figure out if a URL's scheme was set as a result of
guessing

2. extract the URL without a guessed scheme

3. this makes it work similar to how we already deal with port numbers

Extend test 1560 to verify.

Closes #13616

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urlapi: add CURLU_GET_EMPTY for empty queries and fragments

By default the API inhibits empty queries and fragments extracted.
Unless this new flag is set.

This also makes the b

urlapi: add CURLU_GET_EMPTY for empty queries and fragments

By default the API inhibits empty queries and fragments extracted.
Unless this new flag is set.

This also makes the behavior more consistent: without it set, zero
length queries and fragments are considered not present in the URL. With
the flag set, they are returned as a zero length strings if they were in
fact present in the URL.

This applies when extracting the individual query and fragment
components and for the full URL.

Closes #13396

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TLS: add support for ECH (Encrypted Client Hello)

An EXPERIMENTAL feature used with CURLOPT_ECH and --ech.

Closes #11922

curl_version_info: provide librtmp version

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

CURLINFO_USED_PROXY: return bool whether the proxy was used

Adds test536 to verify

Closes #12719

getinfo: CURLINFO_QUEUE_TIME_T

Returns the time, in microseconds, during which this transfer was held
in a waiting queue before it started "for real". A transfer might be put
in a qu

getinfo: CURLINFO_QUEUE_TIME_T

Returns the time, in microseconds, during which this transfer was held
in a waiting queue before it started "for real". A transfer might be put
in a queue if after getting started, it cannot create a new connection
etc due to set conditions and limits imposed by the application.

Ref: #12293
Closes #12368

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CURLOPT_SERVER_RESPONSE_TIMEOUT_MS: add

Proposed-by: Yifei Kong
Ref: https://curl.se/mail/lib-2023-11/0023.html
Closes #12369

curl.h: add CURLE_TOO_LARGE

A new error code to be used when an internal field grows too large, like
when a dynbuf reaches its maximum. Previously it would return
CURLE_OUT_OF_MEMORY

curl.h: add CURLE_TOO_LARGE

A new error code to be used when an internal field grows too large, like
when a dynbuf reaches its maximum. Previously it would return
CURLE_OUT_OF_MEMORY for this, which is highly misleading.

Ref: #12268
Closes #12269

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symbols-in-versions: the CLOSEPOLICY options are deprecated

The were used with the CURLOPT_CLOSEPOLICY option, which *never* worked.

windows: use built-in `_WIN32` macro to detect Windows

Windows compilers define `_WIN32` automatically. Windows SDK headers
or build env defines `WIN32`, or we have to take care of it. T

windows: use built-in `_WIN32` macro to detect Windows

Windows compilers define `_WIN32` automatically. Windows SDK headers
or build env defines `WIN32`, or we have to take care of it. The
agreement seems to be that `_WIN32` is the preferred practice here.
Make the source code rely on that to detect we're building for Windows.

Public `curl.h` was using `WIN32`, `__WIN32__` and `CURL_WIN32` for
Windows detection, next to the official `_WIN32`. After this patch it
only uses `_WIN32` for this. Also, make it stop defining `CURL_WIN32`.

There is a slight chance these break compatibility with Windows
compilers that fail to define `_WIN32`. I'm not aware of any obsolete
or modern compiler affected, but in case there is one, one possible
solution is to define this macro manually.

grepping for `WIN32` remains useful to discover Windows-specific code.

Also:

- extend `checksrc` to ensure we're not using `WIN32` anymore.

- apply minor formatting here and there.

- delete unnecessary checks for `!MSDOS` when `_WIN32` is present.

Co-authored-by: Jay Satiro
Reviewed-by: Daniel Stenberg

Closes #12376

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tidy-up: whitespace fixes

Closes #11972

urlapi: CURLU_PUNY2IDN - convert from punycode to IDN name

Asssisted-by: Jay Satiro
Closes #11655

lib: add CURLINFO_CONN_ID and CURLINFO_XFER_ID

- add an `id` long to Curl_easy, -1 on init
- once added to a multi (or its own multi), it gets
a non-negative number assigned by the

lib: add CURLINFO_CONN_ID and CURLINFO_XFER_ID

- add an `id` long to Curl_easy, -1 on init
- once added to a multi (or its own multi), it gets
a non-negative number assigned by the connection cache
- `id` is unique among all transfers using the same
cache until reaching LONG_MAX where it will wrap
around. So, not unique eternally.
- CURLINFO_CONN_ID returns the connection id attached to
data or, if none present, data->state.lastconnect_id
- variables and type declared in tool for write out

Closes #11185

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haproxy: add --haproxy-clientip flag to spoof client IPs

CURLOPT_HAPROXY_CLIENT_IP in the library

Closes #10779

CURLOPT_MAIL_RCPT_ALLOWFAILS: replace CURLOPT_MAIL_RCPT_ALLLOWFAILS

Deprecate the name using three Ls and prefer the name with two.

Replaces #10047
Closes #11218

CURLPROXY_HTTPS2: for HTTPS proxy that may speak HTTP/2

Setting this proxy type allows curl to negotiate and use HTTP/2 with
HTTPS proxies.

Closes #10900

openssl: interop with AWS-LC

* Configure changes to detect AWS-LC
* CMakeLists.txt changes to detect AWS-LC
* Compile-time branches needed to support AWS-LC
* Correctly set OSSL_

openssl: interop with AWS-LC

* Configure changes to detect AWS-LC
* CMakeLists.txt changes to detect AWS-LC
* Compile-time branches needed to support AWS-LC
* Correctly set OSSL_VERSION and report AWS-LC release number
* GitHub Actions script to build with autoconf and cmake against AWS-LC

AWS-LC is a BoringSSL/OpenSSL derivative
For more information see https://github.com/awslabs/aws-lc/

Closes #10320

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curl.h: add CURL_HTTP_VERSION_3ONLY

As the previous CURL_HTTP_VERSION_3 option gets a slightly altered meaning.

Closes #10264

share: add sharing of HSTS cache among handles

Closes #10138

urlapi: add CURLU_PUNYCODE

Allows curl_url_get() get the punycode version of host names for the
host name and URL parts.

Extend test 1560 to verify.

Closes #10109

CURLOPT_QUICK_EXIT: don't wait for DNS thread on exit

Fixes #2975
Closes #9147

lib: feature deprecation warnings in gcc >= 4.3

Add a deprecated attribute to functions and enum values that should not
be used anymore.
This uses a gcc 4.3 dialect, thus is only ava

lib: feature deprecation warnings in gcc >= 4.3

Add a deprecated attribute to functions and enum values that should not
be used anymore.
This uses a gcc 4.3 dialect, thus is only available for this version of
gcc and newer. Note that the _Pragma() keyword is introduced by C99, but
is available as part of the gcc dialect even when compiling in C89 mode.

It is still possible to disable deprecation at a calling module compile
time by defining CURL_DISABLE_DEPRECATION.

Gcc type checking macros are made aware of possible deprecations.

Some testing support Perl programs are adapted to the extended
declaration syntax.

Several test and unit test C programs intentionally use deprecated
functions/options and are annotated to not generate a warning.

New test 1222 checks the deprecation status in doc and header files.

Closes #9667

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