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https://issues.apache.org/jira/browse/TS-3725?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14617842#comment-14617842
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ASF GitHub Bot commented on TS-3725:
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Github user jacksontj commented on the pull request:
https://github.com/apache/trafficserver/pull/242#issuecomment-119399795
From some chats with @SolidWallOfCode the issue he saw may have been due to
how he implemented the feature previously (at a higher layer)-- but we aren't
sure. In my local testing I'm unable to produce any issues with having the host
file return loopback addresses, but they aren't guaranteed to be exhaustive.
> ATS's use of host files is broken
> ---------------------------------
>
> Key: TS-3725
> URL: https://issues.apache.org/jira/browse/TS-3725
> Project: Traffic Server
> Issue Type: Bug
> Affects Versions: 5.3.0, 6.0.0
> Reporter: Thomas Jackson
> Assignee: Thomas Jackson
> Fix For: 6.0.0
>
>
> The previous implementation actually loaded up the hosts file (in a
> background thread) and did a get (getbyname_imm) and then set the IPs to
> match. This works-- but does cause a problem since the port set on it is 0.
> What we need to do is have this thread maintain in an in-memory mapping of
> name -> ip and have it override resolution within hostdb-- that way we can
> use host files and maintain whether reals are up or down.
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