- fix symbol used for first-round detection.
- skip detecting mbedtls on custom path if custom path was not supplied.
Reported-by: Ross Burton
Fixes#21727Closes#21729
Replace result code `CURLE_SSL_CIPHER` with
`CURLE_BAD_FUNCTION_ARGUMENT` in case of a low-level digest function
fails. Functionality is related to vauth, not SSL, and the operation is
a digest, not a cipher.
Also fix a indentation.
Follow-up to 05268cf801#13070Closes#21767
- H3 proxy: re-sync code with original source `curl_ngtcp2.c` to reduce
differences, and to apply missed minor fixes. Also apply clang-format.
Drop redundant `#undef`s, casts, `#endif` comments, includes, drop
intermediate variables, sync include and macro order.
Follow-up to e78b1b3ecc#21153
- INSTALL-CMAKE.md: move `CURL_ENABLE_SMB` to the enable section.
- tests/http/env: rename `tcpdmp` to `tcpdump` to match object variable.
- mbedtls: drop incorrect `mbedTLS 4+` comments.
(features are also supported by 3+, meaning it's always supported.)
- lib1648: rename a variable to match purpose.
- CIPHERS.md: alpha-sort link list.
- replace rare `X''` hex markup with `0x`.
- `IP v4/6` -> `IPv4/6`.
- 'version X.Y' -> 'vX.Y', where sensible.
- 'VX.Y' -> 'vX.Y', where sensible.
- fix indents, casing, newlines, typos.
Closes#21772
Check during transfer/content decoding for every MB or so, if the
transfer has reached its overall time limit. Error out if so.
This is mainly a protectin against compression bombs using way more time
than the transfer is allowed to. Normal compression ratios are unlikely
to benefit as they need more upstream data where the timeout handling is
already in place.
Fixes#21603
Reported-by: Joshua Rogers
Closes#21758
The message triggered earlier than intended and did not take the
transfer/content type into account.
Ref #21603
Reported-by: Joshua Rogers
Closes#21756
gnutls_ocsp_resp_get_single() was called with (void) discarding its
return value, so a failure (e.g. an OCSP response with no
SingleResponse entries) went undetected. The following switch() then
read an uninitialized gnutls_ocsp_cert_status_t, which is undefined
behaviour and could yield GNUTLS_OCSP_CERT_GOOD (0) depending on
stack contents, causing gtls_verify_ocsp_status to return CURLE_OK for
a response that was never successfully parsed.
Fix by initializing status to GNUTLS_OCSP_CERT_UNKNOWN and treating a
negative return from gnutls_ocsp_resp_get_single as an error.
Closes#21679
This patch adds two major proxy capabilities to curl (ngtcp2 QUIC):
- HTTP/3 Proxy CONNECT: Tunnel HTTP/1.1 or HTTP/2 traffic through an
HTTPS proxy that speaks HTTP/3 (QUIC) using the standard CONNECT
method over an HTTP/3 connection.
- MASQUE CONNECT-UDP: Tunnel HTTP/3 (QUIC) traffic through an HTTP
proxy (speaking HTTP/1.1, HTTP/2, or HTTP/3) using the extended
CONNECT method with the CONNECT-UDP protocol (RFC9297 & RFC9298).
Public API additions:
- `CURLPROXY_HTTPS3`: new proxy type constant for HTTP/3 proxy
- `--proxy-http3`: new CLI flag to negotiate HTTP/3 with HTTPS proxy
The implementation adds two new filters:
- `H3-PROXY` - enables negotiating HTTP/3 (QUIC) to the proxy and
running CONNECT/CONNECT-UDP through that proxy transport.
- `CAPSULE` - dedicated filter inserted between QUIC transport and
HTTP-PROXY to handle datagram capsule encapsulation/decapsulation.
Here is how the curl filter chaining looks in different scenarios:
- HTTP/3 Proxy CONNECT (tunneling TCP protocols over QUIC proxy):
conn -> HTTP/1.1 or HTTP/2 -> SSL -> HTTP-PROXY ->
H3-PROXY -> HAPPY-EYEBALLS -> UDP
- MASQUE CONNECT-UDP (tunneling QUIC over any proxy):
conn -> HTTP/3 -> CAPSULE -> HTTP-PROXY -> H3-PROXY ->
HAPPY-EYEBALLS -> UDP
conn -> HTTP/3 -> CAPSULE -> HTTP-PROXY -> H1-PROXY or H2-PROXY ->
SSL -> HAPPY-EYEBALLS -> TCP
- Both features currently require the ngtcp2 QUIC backend.
- Both features are experimental (disabled by default). Enable with
`--enable-proxy-http3`(autotools) or `-DUSE_PROXY_HTTP3=ON`(CMake).
Tests:
- tests/unit/unit3400.c: Unit tests for capsule protocol encode/decode
- tests/http/test_60_h3_proxy.py: Comprehensive pytest integration suite
- tests/http/testenv/h2o.py: Managing h2o instances with HTTP/1.1, HTTP/2,
and HTTP/3 (QUIC) listeners, proxy.connect and proxy.connect-udp enabled.
References:
RFC 9297 - HTTP Datagrams and the Capsule Protocol
RFC 9298 - Proxying UDP in HTTP
RFC 9000 §16 — Variable-Length Integer Encoding
Signed-off-by: Aritra Basu <aritrbas+gh@cisco.com>
Closes#21153
- fix macOS locale tests to clear existing variables.
(Without this, the system-defined `LC_ALL` takes precedence, and
the custom envs in CI are ignored.)
- trigger test 1981 issue by setting `LC_TIME` to non-English, on macOS.
(On Linux it'd require explicitly installing a non-English locale, I
skipped this for simplicity.)
```
[...]
-Time: 01/Aug/2025 08:31:43.037103 +0000 UTC[CR][LF]
+Time: 01/ao%c3%bb/2025 08:31:43.037103 +0000 UTC[CR][LF]
[...]
FAIL 1981: '%time output with --write-out' HTTP, HTTP GET
```
Follow-up to 90a7732d46#21749
Follow-up to 1cc8a5235f#17988
Follow-up to c221c0ee59#17938Closes#21753
Detect latest tarball version via the https://curl.se/downloads.html
page, download the signing key from a public keyserver then verify
source download signatures.
To ensure that public downloads are intact.
Closes#21759
Also switch back to ftp.openbsd.org download server. More often than not
the GitHub release entry is missing the download artifacts at the time
of detecting a new version, breaking automatic bumps. We cache the
download so it does not bang the origin server with many requests.
Follow-up to 800b0bec18#19082Closes#21742Closes#21754
Since all API features we need for TLSv1.3 earlydata support do exist
only from version 3.7.2 onwards, make that the minimal version required.
Fixes#21750
Reported-by: Johannes Schlatow
Closes#21751
The mev_sh_entry object might be removed if curl_easy_pause() is called
from within the socket callback.
Introduced a 'magic' struct field to to 'mev_sh_entry' to make it easier
to programmatically detect/assert if the pointer is bad - in debug
builds.
Reported-by: Joshua Rogers
Closes#21748
Host key type mismatch from libssh was incorrectly reported as missing,
causing key callbacks to accept instead of reject.
Reported by: Joshua Rogers (Aisle Research)
Closes#21724
The old CMake bug about exporting -lpthread instead of Threads::Threads
no longer matches current master. As of 2d546d239e
("cmake: use Threads::Threads imported target for POSIX Threads"),
the build now uses Threads::Threads and the generated CMake package
config resolves the dependency explicitly, so this KNOWN_BUGS entry is stale.
Closes#21734
The HTTP/2 feature is deprecated, few servers implement it and our
implementation is complicated by its state management. Make the two
CURLOPT_* involved a nop and deprecate them.
Closes#21723
The entry is about GnuTLS not sending the client cert when it doesn't
match the `DN` the server requested. OpenSSL does the opposite.
The issue was already fixed by #4958 and removed from KNOWN_BUGS,
but it was added back to the list by #16677, seemingly by mistake.
The issue is still fixed for GnuTLS >= 3.5.0.
As curl only supports GnuTLS >= 3.6.5, remove the bug entry from
KNOWN_BUGS.md
Fixes#21720Closes#21722
CI time cost is 1s.
It may replace existing pedantic check, if this level isn't bringing
false-positives or annoyance. Officially it's not meant for CI, but curl
has been passing this in the last couple of months when checked locally.
Closes#21718
- use `UNITTEST_BEGIN_SIMPLE`/`UNITTEST_END_SIMPLE` where missing.
- drop redundant `(void)arg;` where using `UNITTEST_BEGIN*`.
- unit1636: drop redundant block after `UNITTEST_BEGIN*`.
- unit1609: fix typo in comment.
- unit1627: merge to `if`s.
Closes#21715
- GHA/windows: bump dl-mingw job from gcc 15 to 16.
- multi: silence warning while building libcurlu:
```
In function 'multi_ischanged',
inlined from 'multi_socket.isra' at D:/a/curl/curl/lib/multi.c:3282:6:
D:/a/curl/curl/lib/multi.c:1710:17: error: null pointer dereference [-Werror=null-dereference]
1710 | bool retval = (bool)multi->recheckstate;
| ^~~~~~~~~~~~~~~~~~~~~~~~~
D:/a/curl/curl/lib/multi.c:1712:25: error: null pointer dereference [-Werror=null-dereference]
1712 | multi->recheckstate = FALSE;
| ^
```
Ref: https://github.com/curl/curl/actions/runs/26217071531/job/77142119137?pr=21707
- multi: silence another `-Wnull-dereference`, popping up in libcurl
with gcc 13 after the previous silencing:
```
In function 'Curl_multi_xfers_running',
inlined from 'multi_socket.isra' at ../../lib/multi.c:3292:28:
../../lib/multi.c:4132:15: error: null pointer dereference [-Werror=null-dereference]
4132 | return multi->xfers_alive;
| ~~~~~^~~~~~~~~~~~~
```
Ref: https://github.com/curl/curl/actions/runs/26218822231/job/77148186045
- multi: also add `DEBUGASSERT(multi)` to the two updated functions.
Closes#21707
