tests: change Python code style to pass ruff checks

Most of the changes consisted of removing unused imports and unnecessary
f-strings.

test httpd, tweak cipher list

Configure the AES 256 instead of the AES 128 cipher in the test httpd to
make scorecard testing between httpd and caddy more comparable.

Adapt test

test httpd, tweak cipher list

Configure the AES 256 instead of the AES 128 cipher in the test httpd to
make scorecard testing between httpd and caddy more comparable.

Adapt test_17 expectations, now that AES 128 can no longer, but 256 can
now be negotiated.

Closes #14502

show more ...

http2: improved upload eos handling

- replace the counting of upload lengths with the new eos send flag
- improve frequency of stream draining to happen less on events where it
is

http2: improved upload eos handling

- replace the counting of upload lengths with the new eos send flag
- improve frequency of stream draining to happen less on events where it
is not needed
- this PR is based on #14220

http2, cf-h2-proxy: fix EAGAINed out buffer
- in adjust pollset and shutdown handling, a non-empty `ctx->outbufq`
must trigger send polling, irregardless of http/2 flow control
- in http2, fix retry handling of blocked GOAWAY frame

test case improvement:
- let client 'upload-pausing' handle http versions

Closes #14253

show more ...

tidy-up: whitespace [ci skip]

mbedtls: fix pytest for newer versions

Fix the expectations in pytest for newer versions of mbedtls

Closes #13132

https-proxy: use IP address and cert with ip in alt names

- improve info logging when peer verification fails to indicate
if DNS name or ip address has been tried to match
- add te

https-proxy: use IP address and cert with ip in alt names

- improve info logging when peer verification fails to indicate
if DNS name or ip address has been tried to match
- add test case for contacting https proxy with ip address
- add pytest env check on loaded credentials and re-issue
when they are no longer valid
- disable proxy ip address test for bearssl, since not supported there

Ref: #12831
Closes #12838

show more ...

url: proxy ssl connection reuse fix

- tunnel https proxy used for http: transfers does
no check if proxy-ssl configuration matches
- test cases added, test_10_12 fails on 8.4.0

url: proxy ssl connection reuse fix

- tunnel https proxy used for http: transfers does
no check if proxy-ssl configuration matches
- test cases added, test_10_12 fails on 8.4.0

Closes #12255

show more ...

http2: polish things around POST

- added test cases for various code paths
- fixed handling of blocked write when stream had
been closed inbetween attempts
- re-enabled DEBUGAS

http2: polish things around POST

- added test cases for various code paths
- fixed handling of blocked write when stream had
been closed inbetween attempts
- re-enabled DEBUGASSERT on send with smaller data size

- in debug builds, environment variables can be set to simulate a slow
network when sending data. cf-socket.c and vquic.c support
* CURL_DBG_SOCK_WBLOCK: percentage of send() calls that should be
answered with a EAGAIN. TCP/UNIX sockets.
This is chosen randomly.
* CURL_DBG_SOCK_WPARTIAL: percentage of data that shall be written
to the network. TCP/UNIX sockets.
Example: 80 means a send with 1000 bytes would only send 800
This is applied to every send.
* CURL_DBG_QUIC_WBLOCK: percentage of send() calls that should be
answered with EAGAIN. QUIC only.
This is chosen randomly.

Closes #11756

show more ...

tidy-up: mostly whitespace nits

- delete completed TODO from `./CMakeLists.txt`.
- convert a C++ comment to C89 in `./CMake/CurlTests.c`.
- delete duplicate EOLs from EOF.
- add

tidy-up: mostly whitespace nits

- 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

show more ...

http2: h2 and h2-PROXY connection alive check fixes

- fix HTTP/2 check to not declare a connection dead when
the read attempt results in EAGAIN
- add H2-PROXY alive check as for HT

http2: h2 and h2-PROXY connection alive check fixes

- fix HTTP/2 check to not declare a connection dead when
the read attempt results in EAGAIN
- add H2-PROXY alive check as for HTTP/2 that was missing
and is needed
- add attach/detach around Curl_conn_is_alive() and remove
these in filter methods
- add checks for number of connections used in some test_10
proxy tunneling tests

Closes #11368

show more ...

http2: support HTTP/2 to forward proxies, non-tunneling

- with `--proxy-http2` allow h2 ALPN negotiation to
forward proxies
- applies to http: requests against a https: proxy only,

http2: support HTTP/2 to forward proxies, non-tunneling

- with `--proxy-http2` allow h2 ALPN negotiation to
forward proxies
- applies to http: requests against a https: proxy only,
as https: requests will auto-tunnel
- adding a HTTP/1 request parser in http1.c
- removed h2h3.c
- using new request parser in nghttp2 and all h3 backends
- adding test 2603 for request parser
- adding h2 proxy test cases to test_10_*

scorecard.py: request scoring accidentally always run curl
with '-v'. Removed that, expect double numbers.

labeller: added http1.* and h2-proxy sources to detection

Closes #10967

show more ...

proxy: http2 proxy tunnel implementation

- currently only on debug build and when env variable
CURL_PROXY_TUNNEL_H2 is present.
- will ALPN negotiate with the proxy server and swit

proxy: http2 proxy tunnel implementation

- currently only on debug build and when env variable
CURL_PROXY_TUNNEL_H2 is present.
- will ALPN negotiate with the proxy server and switch
tunnel filter based on the protocol negotiated.
- http/1.1 tunnel code moved into cf-h1-proxy.[ch]
- http/2 tunnel code implemented in cf-h2-proxy.[ch]
- tunnel start and ALPN set remains in http_proxy.c
- moving all haproxy related code into cf-haproxy.[ch]

VTLS changes
- SSL filters rely solely on the "alpn" specification they
are created with and no longer check conn->bits.tls_enable_alpn.
- checks on which ALPN specification to use (or none at all) are
done in vtls.c when creating the filter.

Testing
- added a nghttpx forward proxy to the pytest setup that
speaks HTTP/2 and forwards all requests to the Apache httpd
forward proxy server.
- extending test coverage in test_10 cases
- adding proxy tests for direct/tunnel h1/h2 use of basic auth.
- adding test for http/1.1 and h2 proxy tunneling to pytest

Closes #10780

show more ...

pytest: improvements for suitable curl and error output

- will check built curl for http and https support and
skip all tests if not there
- will dump stdout/stderr/trace output on

pytest: improvements for suitable curl and error output

- will check built curl for http and https support and
skip all tests if not there
- will dump stdout/stderr/trace output on errored responses

Closes #10829

show more ...

tests/http: remove year ranges from copyrights

Closes #10763

tests/http: add pytest to GHA and improve tests

- added to: ngtcp2-quictls, ngtcp2-gnutls and the linux varians
quiche, bearssl, libressl, mbedtls, openssl3, rustls
- added disable

tests/http: add pytest to GHA and improve tests

- added to: ngtcp2-quictls, ngtcp2-gnutls and the linux varians
quiche, bearssl, libressl, mbedtls, openssl3, rustls
- added disabled in ngtcp2-wolfssl due to weird SSL_connect() errors
not reproducable locally

Improvements on pytest:

- handling of systems with nghttpx in $PATH
- configure will seach $PATH got nghttpx used in pytest
- pytest fixes for managing nghttpx without h3 support
- ngtcp2-wolfssl: use a fully enabled wolfssl build

- lower parallel count for http/1.1 tests, since we do not
want to test excessive connections.
- check built curl for HTTPS-proxy support in proxy tests
- bearssl does not like one of our critical cert extensions, making
it non-critical now
- bearssl is too slow for test_12, skipping
- making sure we do h3 tests only when curl and server support is there

Closes #10699

show more ...

tests: rename tests/tests-httpd to tests/http

- httpd is only one server we test with
- the suite coveres the HTTP protocol in general where
the default test cases need a more b

tests: rename tests/tests-httpd to tests/http

- httpd is only one server we test with
- the suite coveres the HTTP protocol in general where
the default test cases need a more beefy environment

Closes #10654

show more ...