CONTRIBUTE: mention how we maintain REUSE compliance

for copyright and license information of all files stored in git

Closes #9032

CURLOPT_ALTSVC.3: document the file format

Closes #9033

runtests: add "threadsafe" to detected features

Follow-up to recent commits which added thread-safety support.

Bug: https://github.com/curl/curl/pull/9012#discussion_r902018782

runtests: add "threadsafe" to detected features

Follow-up to recent commits which added thread-safety support.

Bug: https://github.com/curl/curl/pull/9012#discussion_r902018782
Reported-by: Marc Hörsken

Closes https://github.com/curl/curl/pull/9030

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easy: remove dead code

Follow-up from 5912da253b64d

Detected by Coverity (CID 1506519)

Closes #9029

transfer: upload performance; avoid tiny send

Append to the upload buffer when only small amount remains in buffer
rather than performing a separate tiny send to empty buffer.

A

transfer: upload performance; avoid tiny send

Append to the upload buffer when only small amount remains in buffer
rather than performing a separate tiny send to empty buffer.

Avoid degenerative upload behavior which might cause curl to send mostly
1-byte DATA frames after exhausing the h2 send window size

Related discussion: https://github.com/nghttp2/nghttp2/issues/1722

Signed-off-by: Glenn Strauss <gstrauss@gluelogic.com>
Closes #8965

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projects: fix third-party SSL library build paths for Visual Studio

The paths used by the build batch files were inconsistent with those in
the Visual Studio project files.

Clos

projects: fix third-party SSL library build paths for Visual Studio

The paths used by the build batch files were inconsistent with those in
the Visual Studio project files.

Closes #8991

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urlapi: make curl_url_set(url, CURLUPART_URL, NULL, 0) clear all parts

As per the documentation :

> Setting a part to a NULL pointer will effectively remove that
> part's conten

urlapi: make curl_url_set(url, CURLUPART_URL, NULL, 0) clear all parts

As per the documentation :

> Setting a part to a NULL pointer will effectively remove that
> part's contents from the CURLU handle.

But currently clearing CURLUPART_URL does nothing and returns
CURLUE_OK. This change will clear all parts of the URL at once.

Closes #9028

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CI: bump FreeBSD 13.0 to 13.1

Signed-off-by: Philip H <47042125+pheiduck@users.noreply.github.com>
Closes #8815

RELEASE-NOTES: synced

and updated release date in RELEASE-PROCEDURE.md

CURLOPT_HTTPHEADER.3: improve comment in example

Closes #9025

CI/azure: reduce flakiness by retrying install/prepare steps

Closes #9010

CI/cirrus: align Windows timeout with Azure CI at 120 minutes

Closes #9009

vtls: make curl_global_sslset thread-safe

.. and update some docs to explain curl_global_* is now thread-safe.

Follow-up to 23af112 which made curl_global_init/cleanup thread-safe.

vtls: make curl_global_sslset thread-safe

.. and update some docs to explain curl_global_* is now thread-safe.

Follow-up to 23af112 which made curl_global_init/cleanup thread-safe.

Closes https://github.com/curl/curl/pull/9016

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curl_easy_pause.3: remove explanation of progress function

- Remove misleading text that says progress function "gets called at
least once per second, even if the connection is paused.

curl_easy_pause.3: remove explanation of progress function

- Remove misleading text that says progress function "gets called at
least once per second, even if the connection is paused."

The progress function behavior is more nuanced and the user is better
served reading the progress function doc rather than attempt to explain
it in the curl_easy_pause doc.

The progress function can only be called at least once per second if an
appropriate multi transfer function is called (eg curl_multi_perform) in
that time. For a paused transfer there may not be such a call. Rather
than explain this in detail in the curl_easy_pause doc, rely on the user
reading the CURLOPT_PROGRESSFUNCTION doc.

Ref: https://github.com/curl/curl/issues/8983

Closes https://github.com/curl/curl/pull/9015

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libssh: skip the fake-close when libssh does the right thing

Starting in libssh 0.10.0 ssh_disconnect() will no longer close our
socket. Instead it will be kept alive as we want it, and

libssh: skip the fake-close when libssh does the right thing

Starting in libssh 0.10.0 ssh_disconnect() will no longer close our
socket. Instead it will be kept alive as we want it, and it is our
responsibility to close it later.

Ref: #8718
Ref: https://gitlab.com/libssh/libssh-mirror/-/merge_requests/240
Closes #9021

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configure: warn about rustls being experimental

Right now a dozen test cases are disabled because they don't work with
rustls.

Closes #9019

runtests: skip starting the ssh server if user name is lacking

Because the ssh server startup script *requires* a user name there's no
point in invoking it if no name was found.

runtests: skip starting the ssh server if user name is lacking

Because the ssh server startup script *requires* a user name there's no
point in invoking it if no name was found.

Reported-by: Ricardo M. Correia
Ref: #9007
Closes #9013

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copyright.pl: parse and use .reuse/dep5 for skips

Also scan skipped files to be able to find superfluous ignores, shown with -v.

Closes #9006

reuse/dep5: adjusted to parse better

... adjusted a few files to contain copyright and license info.

Closes #9006

buildconf.bat: update copyright year range

Closes #9006

README.md: use the common "Copyright" style formatting

Closes #9006

reuse: move license info from .mailmap.license to .reuse/dep5

Closes #9006

README.md: add a REUSE badge

Closes #9004

.reuse/dep5: remove recursive docs ignore, only skip markdown files

... and some additional non-markdown individual files in docs/

Closes #9005

docs/cmdline-opts: add copyright and license identifier to each file

gen.pl now insists on C: and SPDX-License-Identifier: fields to be
present in all files.

Closes #9002