connectd/tests: fix test_announce_and_connect_via_dns on macOS#9143
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Two issues caused this test to fail or produce BROKEN log messages on macOS: 1. macOS does not include 'localhost.localdomain' in /etc/hosts by default, so the test's DNS-resolve step fails immediately. Skip with a clear message if the hostname is not resolvable. 2. On macOS/BSD, AI_ADDRCONFIG is implemented by opening temporary probe sockets to test IPv4/IPv6 connectivity. Those sockets are not registered with the io framework, so dev_report_fds() flags them as unowned (BROKEN). Guard AI_ADDRCONFIG with #ifndef __APPLE__ so Linux keeps the optimization while macOS avoids the fd-leak. Changelog-None Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
test_announce_and_connect_via_dnswith a clear message whenlocalhost.localdomainis not resolvable (macOS omits it from/etc/hostsby default)AI_ADDRCONFIGintry_connect_one_addr()with#ifndef __APPLE__: on macOS/BSD,AI_ADDRCONFIGopens temporary probe sockets that are not tracked by theioframework, causingdev_report_fds()to report them as unowned (**BROKEN**); Linux keeps the optimization unchangedCloses #9012
Test plan
uv run pytest tests/test_gossip.py::test_announce_and_connect_via_dns -vpasses on Linuxlocalhost.localdomainin/etc/hosts: test is skipped with a descriptive messagelocalhost.localdomainin/etc/hosts: no**BROKEN**fd messages from connectd at teardown🤖 Generated with Claude Code