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From Eric Covener <>
Subject Re: [users@httpd] HTTPD 2.2.17 removes/filters http header 'Warning' from response
Date Thu, 06 Sep 2012 11:27:16 GMT
On Thu, Sep 6, 2012 at 6:59 AM, Anoop L <> wrote:
> Hi All,
> We  use HTTPD 2.2.17  with Mod_ssl and Mod_proxy in front of HA_proxy to
> terminate https.
> When the backend sends http header named 'Warning' HTTPD removes that from
> response sent to client. I tried adding a customer header value named
> 'Warning1' and client gets that value in response. Any idea why Apache
> filters 'Warning' header is it a bug or related to security.
> Any help would be appreciated.

It looks like mod_proxy filters warnings that have a date in the
warning that doesn't match the backend Date: header.

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