test: try other ipv6 localhost alternatives #4325
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I don't know about this PR. The test queries for 'localhost' with family=AF_INET6. If the local resolver doesn't know how to resolve that, I would argue it's the resolver that is broken, not the test. The change itself LGTM except that there should be two spaces before comments. |
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Generally agree but it seems worthwhile to be a bit flexible and work around broken resolvers. |
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I adjusted the comments a bit, LGTY @bnoordhuis ? |
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LGTM if the CI likes it. |
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CI looks alright: https://ci.nodejs.org/job/node-test-pull-request/1020/ |
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PR-URL: #4325 Reviewed-By: Ben Noordhuis <[email protected]> Reviewed-By: James M Snell <[email protected]>
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PR-URL: nodejs#4325 Reviewed-By: Ben Noordhuis <[email protected]> Reviewed-By: James M Snell <[email protected]>
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PR-URL: nodejs#4325 Reviewed-By: Ben Noordhuis <[email protected]> Reviewed-By: James M Snell <[email protected]>
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ubuntu1404-64has been having issues withtest-net-connect-options-ipv6fairly frequently. I'm not exactly sure why the IPv6localhostresolving is flaky on that particular machine (it could be the way its network is configured?), but being an Ubuntu system it typically has other IPv6 localhost hostnames.This change tries those special IPv6 hostnames first before trying
localhost. If those special hostnames fail to resolve and iflocalhostshould error withENOTFOUND, it retries several times before giving up.I'm hoping this is enough to fix things. I did perform a stress test on that particular node and it was ok on every run after this change.