RELEASE-NOTES: synced

mqtt: enable by default

No longer considered experimental.

Closes #5858

tls: add CURLOPT_SSL_EC_CURVES and --curves

Closes #5892

url: remove funny embedded comments in Curl_disonnect calls

conn: check for connection being dead before reuse

Prevents incorrect reuse of an HTTP connection that has been prematurely
shutdown() by the server.

Partial revert of 755083d00

conn: check for connection being dead before reuse

Prevents incorrect reuse of an HTTP connection that has been prematurely
shutdown() by the server.

Partial revert of 755083d00deb16

Fixes #5884
Closes #5893

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buildconf: exec autoreconf to avoid additional process

Also make buildconf exit with the return code of autoreconf.

Reviewed-by: Daniel Stenberg

Follow up to #5853
Clos

buildconf: exec autoreconf to avoid additional process

Also make buildconf exit with the return code of autoreconf.

Reviewed-by: Daniel Stenberg

Follow up to #5853
Closes #5890

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CI/azure: no longer ignore results of test 1013

Follow up to #5771
Closes #5889

docs: add description about CI platforms to CONTRIBUTE.md

Reviewed-by: Daniel Stenberg
Reviewed-by: Marcel Raad
Reviewed-by: Jay Satiro

Closes #5882

tests/getpart: use MIME::Base64 instead of home-cooked

Since we already use the base64 package since a while back, we can just
as well switch to that here too.

It also happens t

tests/getpart: use MIME::Base64 instead of home-cooked

Since we already use the base64 package since a while back, we can just
as well switch to that here too.

It also happens to use the exact same function name, which otherwise
causes a run-time warning.

Reported-by: Marc Hörsken
Fixes #5885
Closes #5887

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ntlm: fix condition for curl_ntlm_core usage

`USE_WINDOWS_SSPI` without `USE_WIN32_CRYPTO` but with any other DES
backend is fine, but was excluded before.

This also fixes test

ntlm: fix condition for curl_ntlm_core usage

`USE_WINDOWS_SSPI` without `USE_WIN32_CRYPTO` but with any other DES
backend is fine, but was excluded before.

This also fixes test 1013 as the condition for SMB support in
configure.ac didn't match the condition in the source code. Now it
does.

Fixes https://github.com/curl/curl/issues/1262
Closes https://github.com/curl/curl/pull/5771

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AppVeyor: switch 64-bit Schannel Debug CMake builds to Unicode

The Schannel builds are the most useful to verify as they make the most
use of the Windows API. Classic MinGW doesn't suppo

AppVeyor: switch 64-bit Schannel Debug CMake builds to Unicode

The Schannel builds are the most useful to verify as they make the most
use of the Windows API. Classic MinGW doesn't support Unicode at all,
only MinGW-w64 and MSVC do.

Closes https://github.com/curl/curl/pull/5843

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CMake: add option to enable Unicode on Windows

As already existing for winbuild.

Closes https://github.com/curl/curl/pull/5843

select: simplify return code handling for poll and select

poll and select already return -1 on error according to POSIX,
so there is no need to perform a <0 to -1 conversion in code.

select: simplify return code handling for poll and select

poll and select already return -1 on error according to POSIX,
so there is no need to perform a <0 to -1 conversion in code.

Also we can just use one check with <= 0 on the return code.

Assisted-by: Daniel Stenberg
Reviewed-by: Jay Satiro

Replaces #5852
Closes #5880

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RELEASE-NOTES: synced

tests: add test1912 with typechecks

Validates that gcc-typecheck macros match the new option type API.

Closes #5873

easyoptions: provide debug function when DEBUGBUILD

... not CURLDEBUG as they're not always set in conjunction.

Follow-up to 6ebe63fac23f38df

Fixes #5877
Closes #5878

sockfilt: handle FD_CLOSE winsock event on write socket

Learn from the way Cygwin handles and maps the WinSock events
to simulate correct and complete poll and select behaviour
accor

sockfilt: handle FD_CLOSE winsock event on write socket

Learn from the way Cygwin handles and maps the WinSock events
to simulate correct and complete poll and select behaviour
according to Richard W. Stevens Network Programming book.

Follow up to #5867
Closes #5879

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multi: handle connection state winsock events

Learn from the way Cygwin handles and maps the WinSock events
to simulate correct and complete poll and select behaviour
according to Ri

multi: handle connection state winsock events

Learn from the way Cygwin handles and maps the WinSock events
to simulate correct and complete poll and select behaviour
according to Richard W. Stevens Network Programming book.

Reviewed-by: Jay Satiro
Reviewed-by: Marcel Raad

Follow up to #5634
Closes #5867

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Curl_pgrsTime - return new time to avoid timeout integer overflow

Setting a timeout to INT_MAX could cause an immediate error to get
returned as timeout because of an overflow when diffe

Curl_pgrsTime - return new time to avoid timeout integer overflow

Setting a timeout to INT_MAX could cause an immediate error to get
returned as timeout because of an overflow when different values of
'now' were used.

This is primarily fixed by having Curl_pgrsTime() return the "now" when
TIMER_STARTSINGLE is set so that the parent function will continue using
that time.

Reported-by: Ionuț-Francisc Oancea
Fixes #5583
Closes #5847

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TLS: fix SRP detection by using the proper #ifdefs

USE_TLS_SRP will be true if *any* selected TLS backend can use SRP

HAVE_OPENSSL_SRP is defined when OpenSSL can use it

HA

TLS: fix SRP detection by using the proper #ifdefs

USE_TLS_SRP will be true if *any* selected TLS backend can use SRP

HAVE_OPENSSL_SRP is defined when OpenSSL can use it

HAVE_GNUTLS_SRP is defined when GnuTLS can use it

Clarify in the curl_verison_info docs that CURL_VERSION_TLSAUTH_SRP is
set if at least one of the supported backends offers SRP.

Reported-by: Stefan Strogin
Fixes #5865
Closes #5870

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docs: SSLCERTS: fix English syntax

Signed-off-by: Dan Kenigsberg <danken@redhat.com>

Closes #5876

docs: non-existing macros in man pages

As reported by man(1) when invoked as:

man --warnings -E UTF-8 -l -Tutf8 -Z <file> >/dev/null

Closes #5846

curl.1: fix typo invokved -> invoked

Closes #5846

buildconf: invoke 'autoreconf -fi' instead

The custom script isn't necessary anymore - but remains for simplicity
and just invokes autoreconf.

Closes #5853

lib: make Curl_gethostname accept a const pointer

The address of that variable never gets changed, only the data in it so
why not make it a "char * const"?

Closes #5866