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test798: force IPv4 to avoid cross-runner port aliasing

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`test798` is the only test fetching `http://localhost:%HTTPPORT` without
`-4`, since it needs the hostname for its folded `domain=localhost`
cookie. curl tries `::1` first, but the test HTTP server is IPv4-only.
On the BSDs, IPv4 and IPv6 have separate ephemeral port namespaces, so
with every test server binding port 0, another parallel runner's
IPv6-bound server can hold the same numeric port. curl then connects to
the wrong runner's server, which cannot open its own `log/N/test798` and
closes without a response, giving exit 52 and an empty `server.input`.

This PR fixes this flake by adding `-4` matches what tests 389 and 392
already do. Linux is immune because wildcard IPv6 binds occupy the IPv4
port too. Seen in
https://github.com/curl/curl/actions/runs/29229170329/job/86749470571.

Closes #22318
This commit is contained in:
Graham Campbell 2026-07-14 01:37:51 +01:00 • committed by Viktor Szakats
parent b8c061c751
commit 94fab2d210
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tests/data/test798
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@ -36,7 +36,7 @@ http
HTTP cookies in a folded header
</name>
<command>
http://localhost:%HTTPPORT/we/want/%TESTNUMBER -b none -c %LOGDIR/jar%TESTNUMBER.txt
-4 http://localhost:%HTTPPORT/we/want/%TESTNUMBER -b none -c %LOGDIR/jar%TESTNUMBER.txt
</command>
<features>
cookies