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https://issues.apache.org/jira/browse/TS-905?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Leif Hedstrom updated TS-905:
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Fix Version/s: 3.1.1
> Improve state machine around DNS lookups and handling of URL_REMAP_FOR_OS
> -------------------------------------------------------------------------
>
> Key: TS-905
> URL: https://issues.apache.org/jira/browse/TS-905
> Project: Traffic Server
> Issue Type: Improvement
> Components: DNS, HTTP
> Reporter: Leif Hedstrom
> Fix For: 3.1.1
>
>
> The code around DNS lookups in the HTTP state machine is somewhat odd. The
> same state is revisited at least twice in the case of a parent proxy lookup
> for example, and the internal state is not reset in between such lookups.
> This caused breakage of parent proxy when we added an API to bypass origin
> DNS lookup, as a very obscure side effect.
> Also, there's code in there for a remapping mode URL_REMAP_FOR_OS (2), which
> I believe we have crippled, and it's unclear exactly when it would be used.
> We should examine this, and either fix this mode, or disable it completely.
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