Multipath TCP (MPTCP), standardized in RFC8684 [1], is a TCP extension
that enables a TCP connection to use different paths.
Multipath TCP has been used for several use cases. On smartphones, MPTCP
enables seamless handovers between cellular and Wi-Fi networks while
preserving established connections. This use-case is what pushed Apple
to use MPTCP since 2013 in multiple applications [2]. On dual-stack
hosts, Multipath TCP enables the TCP connection to automatically use the
best performing path, either IPv4 or IPv6. If one path fails, MPTCP
automatically uses the other path.
To benefit from MPTCP, both the client and the server have to support
it. Multipath TCP is a backward-compatible TCP extension that is enabled
by default on recent Linux distributions (Debian, Ubuntu, Redhat, ...).
Multipath TCP is included in the Linux kernel since version 5.6 [3]. To
use it on Linux, an application must explicitly enable it when creating
the socket. No need to change anything else in the application.
This attached patch adds an --mptcp option which allows the creation of
an MPTCP socket instead of TCP on Linux. If Multipath TCP is not
supported on the system, an error will be reported. It is important to
note that if the end server doesn't support MPTCP, the connection will
continue after a seamless fallback to TCP.
Link: https://www.rfc-editor.org/rfc/rfc8684.html [1]
Link: https://www.tessares.net/apples-mptcp-story-so-far/ [2]
Link: https://www.mptcp.dev [3]
Co-developed-by: Dorian Craps (@CrapsDorian) <doriancraps@gmail.com>
Co-developed-by: Olivier Bonaventure (@obonaventure) <Olivier.Bonaventure@uclouvain.be>
Co-developed-by: Matthieu Baerts (@matttbe) <matttbe@kernel.org>
Signed-off-by: Dorian Craps <dorian.craps@student.vinci.be>
Closes#13278
The OpenVMS script `config_h.com` is parsing the config header
generated by autotools. Let's make it look for the macro name we now
use universally across the codebase.
Follow-up to e411c98f70#13349Closes#13360
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 $() subcommand
construct.
Follow-up to 8a622baf9eCloses#13366
- use `$()` instead of backticks, and re-arrange double-quotes inside.
- add missing `|| exit 1` to `cd` calls. (could be dropped by using `set -eu`.)
- add `-n` to a few `if`s.
- shorten redirections by using `{} >` (as shellcheck recommended).
- silence warnings where variables were detected as unused (SC2034).
- a couple misc updates to silence warnings.
- switch to bash shebang for `-ot` feature.
- split two lines to unbreak syntax highlighting in my editor. (`$(expr \`, `$(dirname \`)
Also enable CI checks for OS/400 shell scripts.
Ref: #13307Closes#13309
Awk is a PASE program and its use may cause a failure depending on the
CCSID of the calling script (IBM bug?).
For this reason, revert to an sed-only solution to extract the exported
symbols from the header files.
Closes#12826
Stop setting `HAVE_GSSHEIMDAL`, `HAVE_GSSMIT` and `HAVE_HEIMDAL`.
There was no place in the build system or source code that used them.
Reviewed-by: Daniel Stenberg
Closes#12506
https://best.openssf.org/Compiler-Hardening-Guides/Compiler-Options-Hardening-Guide-for-C-and-C++.html
as of 2023-11-29 [1].
Enable new recommended warnings (except `-Wsign-conversion`):
- enable `-Wformat=2` for clang (in both cmake and autotools).
- add `CURL_PRINTF()` internal attribute and mark functions accepting
printf arguments with it. This is a copy of existing
`CURL_TEMP_PRINTF()` but using `__printf__` to make it compatible
with redefinting the `printf` symbol:
https://gcc.gnu.org/onlinedocs/gcc-3.0.4/gcc_5.html#SEC94
- fix `CURL_PRINTF()` and existing `CURL_TEMP_PRINTF()` for
mingw-w64 and enable it on this platform.
- enable `-Wimplicit-fallthrough`.
- enable `-Wtrampolines`.
- add `-Wsign-conversion` commented with a FIXME.
- cmake: enable `-pedantic-errors` the way we do it with autotools.
Follow-up to d5c0351055#2747
- lib/curl_trc.h: use `CURL_FORMAT()`, this also fixes it to enable format
checks. Previously it was always disabled due to the internal `printf`
macro.
Fix them:
- fix bug where an `set_ipv6_v6only()` call was missed in builds with
`--disable-verbose` / `CURL_DISABLE_VERBOSE_STRINGS=ON`.
- add internal `FALLTHROUGH()` macro.
- replace obsolete fall-through comments with `FALLTHROUGH()`.
- fix fallthrough markups: Delete redundant ones (showing up as
warnings in most cases). Add missing ones. Fix indentation.
- silence `-Wformat-nonliteral` warnings with llvm/clang.
- fix one `-Wformat-nonliteral` warning.
- fix new `-Wformat` and `-Wformat-security` warnings.
- fix `CURL_FORMAT_SOCKET_T` value for mingw-w64. Also move its
definition to `lib/curl_setup.h` allowing use in `tests/server`.
- lib: fix two wrongly passed string arguments in log outputs.
Co-authored-by: Jay Satiro
- fix new `-Wformat` warnings on mingw-w64.
[1] 56c0fde389/docs/Compiler-Hardening-Guides/Compiler-Options-Hardening-Guide-for-C-and-C%2B%2B.mdCloses#12489
- delete completed TODO from `./CMakeLists.txt`.
- convert a C++ comment to C89 in `./CMake/CurlTests.c`.
- delete duplicate EOLs from EOF.
- add missing EOL at EOF.
- delete whitespace at EOL (except from expected test results).
- convert tabs to spaces.
- convert CRLF EOLs to LF in GHA yaml.
- text casing fixes in `./CMakeLists.txt`.
- fix a codespell typo in `packages/OS400/initscript.sh`.
Closes#11772
This test runs a perl script that checks all string options are properly
translated by the OS400 character code conversion wrapper. It also
verifies these options are listed in alphanumeric order in the wrapper
switch statement.
Closes#11650
We remove support for building curl with gskit.
- This is a niche TLS library, only running on some IBM systems
- no regular curl contributors use this backend
- no CI builds use or verify this backend
- gskit, or the curl adaption for it, lacks many modern TLS features
making it an inferior solution
- build breakages in this code take weeks or more to get detected
- fixing gskit code is mostly done "flying blind"
This removal has been advertized in DEPRECATED in Jan 2, 2023 and it has
been mentioned on the curl-library mailing list.
It could be brought back, this is not a ban. Given proper effort and
will, gskit support is welcome back into the curl TLS backend family.
Closes#11460
EGD is Entropy Gathering Daemon, a socket-based entropy source supported
by pre-OpenSSL v1.1 versions and now deprecated. curl also deprecated it
a while ago.
Its detection in CMake was broken all along because OpenSSL libs were
not linked at the point of feature check.
Delete detection from both cmake and autotools, along with the related
source snippet, and the `--with-egd-socket=` `./configure` option.
Closes#11556
Correct EXPECTED_STRING_LASTZEROTERMINATED to account for
CURLOPT_HAPROXY_CLIENT_IP which requires EBCDIC to ASCII conversion when
passed into curl_easy_setopt().
Closes#11476
- Use V7R4 RPG procedure overloading to improve vararg emulation.
From OS400 V7R4 and above, ILE/RPG implements a limited procedure
overloading feature that can be used to improve curl's typed
implementation of varargs procedures. This commit applies it to
curl_easy_setopt(), curl_multi_setopt(), curl_share_setopt() and
curl_easy_getinfo().
Closes https://github.com/curl/curl/pull/10994
- Fix wrong definitions of CURL_ZERO_TERNINATED, curl_mime_data() and
curl_mime_data_ccsid().
- Add recent definitions, in particular blob, header API and WebSockets
API.
- Support for CURLVERSION_ELEVENTH.
- New functions for EBCDIC support.
Reflect these changes in README.OS400.
Closes https://github.com/curl/curl/pull/10994
- Support CURLVERSION_ELEVENTH.
- New function curl_url_strerror_ccsid().
- curl_easy_setopt_ccsid() supports blobs and 3 recent string options.
- New function curl_easy_header_ccsid().
- New generic latin1<-->ccsid conversion functions curl_from_ccsid() and
curl_to_ccsid() for user convenience.
- README.OS400 updated accordingly.
- Removed a leftover QsoSSL support identifier.
Closes https://github.com/curl/curl/pull/10994
- Rename shell function "system" to "CLcommand" to avoid confusion with
built-in command.
- Reformat scripts. Fix some indentations. Avoid lines > 80 characters
where possible.
- Support ASCII runtime development files in a user-defined directory
path.
- FIX SONAME detection.
- Drop form API test program compilation (does not exist anymore).
Closes https://github.com/curl/curl/pull/10994
Add const qualifier to 5th argument of Curl_os400_sendto()
Make OS400 wrapper for sendto match the normal prototype of sendto()
with a const qualifier.
Fixes#10539Closes#10548
Adjust how exports list is generated from header files to account for
declarations across multiple lines and CURL_DEPRECATED(...) tags.
Update initscript.sh
Specify qadrt_use_inline to prevent unistd.h in ASCII runtime defining
close(a) -> close_a(a)
Fixes#10266Closes#10267
- Set all scripts +x, ie 644 => 755.
Prior to this change some scripts were not executable and therefore
could not be called directly.
~~~
git ls-files -s \*.{sh,pl,py} | grep -v 100755
~~~
Closes https://github.com/curl/curl/pull/10219
- they are mostly pointless in all major jurisdictions
- many big corporations and projects already don't use them
- saves us from pointless churn
- git keeps history for us
- the year range is kept in COPYING
checksrc is updated to allow non-year using copyright statements
Closes#10205
Fix various uses of connnect by replacing them with connect.
Closes: #10045
Reviewed-by: Daniel Stenberg <daniel@haxx.se>
Reviewed-by: Daniel Gustafsson <daniel@yesql.se>
Commit a8861b6cc removed packages/DOS but left a few traces of it
which broke the distcheck CI. Remove all traces.
Closes: #9971
Reviewed-by: Daniel Stenberg <daniel@haxx.se>
Commit 3b16575ae9 removed support for
building on Novell Netware, but a few leftover traces remained. This
removes the last bits.
Closes: #9966
Reviewed-by: Daniel Stenberg <daniel@haxx.se>
Update bare GNU Make `Makefile.m32` to:
- Move objects into a subdirectory.
- Add support for MS-DOS. Tested with DJGPP.
- Add support for Watt-32 (on MS-DOS).
- Add support for AmigaOS.
- Rename `Makefile.m32` to `Makefile.mk`
- Replace `ARCH` with `TRIPLET`.
- Build `tool_hugehelp.c` proper (when tools are available).
- Drop MS-DOS compatibility macro `USE_ZLIB` (replaced by `HAVE_LIBZ`)
- Add support for `ZLIB_LIBS` to override `-lz`.
- Omit object files when building examples.
- Default `CC` to `gcc` once again, for convenience. (Caveat: compiler
name `cc` cannot be set now.)
- Set `-DCURL_NO_OLDIES` for examples, like autotools does.
- Delete `makefile.dj` files. Notice the configuration details and
defaults are not retained with the new method.
- Delete `makefile.amiga` files. A successful build needs a few custom
options. We're also not retaining all build details from the existing
Amiga make files.
- Rename `Makefile.m32` to `Makefile.mk` to reflect that they are not
Windows/MinGW32-specific anymore.
- Add support for new `CFG` options: `-map`, `-debug`, `-trackmem`
- Set `-DNDEBUG` by default.
- Allow using `-DOS=...` in all `lib/config-*.h` headers, syncing this
with `config-win32.h`.
- Look for zlib parts in `ZLIB_PATH/include` and `ZLIB_PATH/lib`
instead of bare `ZLIB_PATH`.
Note that existing build configurations for MS-DOS and AmigaOS likely
become incompatible with this change.
Example AmigaOS configuration:
```
export CROSSPREFIX=/opt/amiga/bin/m68k-amigaos-
export CC=gcc
export CPPFLAGS='-DHAVE_PROTO_BSDSOCKET_H'
export CFLAGS='-mcrt=clib2'
export LDFLAGS="${CFLAGS}"
export LIBS='-lnet -lm'
make -C lib -f Makefile.mk
make -C src -f Makefile.mk
```
Example MS-DOS configuration:
```
export CROSSPREFIX=/opt/djgpp/bin/i586-pc-msdosdjgpp-
export WATT_PATH=/opt/djgpp/net/watt
export ZLIB_PATH=/opt/djgpp
export OPENSSL_PATH=/opt/djgpp
export OPENSSL_LIBS='-lssl -lcrypt'
export CFG=-zlib-ssl
make -C lib -f Makefile.mk
make -C src -f Makefile.mk
```
Closes#9764
Curl_getnameinfo_a() is prototyped before including curl.h as an
ASCII'fied wrapper for getnameinfo(), which itself is prototyped with
socklen_t arguments, so this should use the platform socklen_t and not
curl_socklen_t too.
Update setup-os400.h
Fixes#9811Closes#9812
