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https://issues.apache.org/jira/browse/TS-492?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Leif Hedstrom updated TS-492:
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Fix Version/s: (was: 2.1.5)
2.1.6
> Allow use of client supplied IP address for origin server.
> ----------------------------------------------------------
>
> Key: TS-492
> URL: https://issues.apache.org/jira/browse/TS-492
> Project: Traffic Server
> Issue Type: New Feature
> Components: DNS
> Reporter: Alan M. Carroll
> Assignee: Alan M. Carroll
> Priority: Minor
> Fix For: 2.1.6
>
>
> When operating in transparent mode, the IP address of the origin server is
> available from the client socket connection. This enhancement would add a
> switch (default to false) that would use that IP address rather than doing a
> host DB or DNS lookup *if* the URL had not been modified. If the URL is
> modified (remapped) then the lookup would proceed, ignoring this
> configuration flag.
> This not only enhances performance but also is required for certain websites
> that embed the IP address of the origin server in the exchange and use DNS
> switching for performance. In that case ATS can connect to a different origin
> server than the client intended, leading to a protocol failure. One prominent
> example is Microsoft Windows update.
> For now, this switch can be turned on globally and disabled locally by
> creating identity mappings for the exceptions. It may be desirable at some
> point to be able to specifically disable it rather then depend on the
> serendipitous effects of remapping.
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