Closes #3811

Kerberos was incorrectly indented as a subsection under FTP, which is
incorrect as they are both top level sections. A fix for this was first
attempted in commit fef38a08 but that
was a few paddles short of being complete.

Add the subsections under "Structs in libcurl" to the table of contents.

Reviewed-by: Daniel Stenberg <daniel@haxx.se>
Reviewed-by: Daniel Gustafsson <daniel@yesql.se>

Make all struct members under the Curl_handler section
print in monospace font.

Closes #3801
Reviewed-by: Daniel Stenberg <daniel@haxx.se>
Reviewed-by: Daniel Gustafsson <daniel@yesql.se>

Introducing the curl bug bounty program on hackerone. We now recommend
filing security issues directly in the hackerone ticket system which
only is readable to curl security team members.

Assisted-by: Daniel Gustafsson

Closes #3488

... and disconnect too old ones instead of trying to reuse.

Default max age is set to 118 seconds.

Ref: #3722
Closes #3782

.. because functionality may be affected if the versions differ.

This commit implements TODO 18.7 "warning if curl version is not in sync
with libcurl version".

Ref: https://github.com/curl/curl/blob/curl-7_64_1/docs/TODO#L1028-L1033

Closes https://github.com/curl/curl/pull/3774

Commit 9081014c fixed most of the confusing issues between scope id and
scope however 844896d0 added bad limits checking assuming that the scope
is being set and not the scope id.

I have fixed the documentation so it all refers to scope ids.

In addition Curl_if2ip refered to the scope id as remote_scope_id which
is incorrect, so I renamed it to local_scope_id.

Adjusted-by: Daniel Stenberg

Closes #3655
Closes #3765
Fixes #3713

Only allow well formed decimal numbers in the input.

Document that the number MUST be between 1 and 65535.

Add tests to test 1560 to verify the above.

Ref: https://github.com/curl/curl/issues/3753
Closes #3762

Remove the code too. The functionality has been disabled in code since
7.62.0. Setting this option will from now on simply be ignored and have
no function.

Closes #3654

Fixes #3738
Closes #3749

As previously planned and documented in DEPRECATE.md, all pipelining
code is removed.

Closes #3651

Closes #3731
Fixes #3289

Closes #3724
Reviewed-by: Jakub Zakrzewski
Reviewed-by: Daniel Gustafsson

Closes #3698

... to match the style already used for compiling, linking
etc. Acknowledges 'make V=1' to enable verbose.

Closes #3681

Suggested-by: Eric Curtin
Improved-by: Dan Fandrich
Ref: #3680

Closes #3683

From a discussion in #3676

Suggested-by: Tim Rühsen

Closes #3682

.. and for Windows also call WSACleanup since we call WSAStartup.

The example is to demonstrate handling the socket independently of
libcurl. In this case libcurl is not responsible for creating, opening
or closing the socket, it is handled by the application (our example).

Fixes https://github.com/curl/curl/pull/3663

Clarify the language and simplify.

Reported-by: Daniel Lublin
Closes #3658

Closes #3145

That's the only public curl header we should encourage use of.

Reviewed-by: Marcel Raad
Closes #3645

Closes #3498

Reported-by: Sara Golemon

Fixes #3592
Closes #3634

The main change here is the timer value that was wrong, it was given in
usecs (ms * 1000), while the itimerspec struct wants nsecs (ms * 1000 *
1000). This resulted in the callback being invoked WAY TOO OFTEN.

As a quick check you can run this command before and after applying this
commit:

    # shell 1
    ./ephiperfifo 2>&1 | tee ephiperfifo.log
    # shell 2
    echo http://hacking.elboulangero.com

 > hiper.fifo

Then just compare the size of the logs files.

Closes #3633
Fixes #3632
Signed-off-by: Arnaud Rebillout <arnaud.rebillout@collabora.com>

 - use better variable names to explain their purposes
 - convert logic to curl_multi_wait()

clarify redir - "in absurdum" doesn't seem to make sense in this context

Closes #3631

Everyone calls it Secure Transport, now we do too.

Reviewed-by: Nick Zitzmann

Closes #3619