On Mon, Nov 28, 2011 at 11:00 AM, John Doe <jdmls@xxxxxxxxx> wrote:
> Ok. We will have to weight the additional load...
> I understand it will be doubled in case of a 200 (low occurences).
> But for all the 404s, it is only configuration parsing in RAM, plus
> one "file not found" on the filesystem, right?
>
No, it will be doubled in all cases:
In all cases, there will be one initial SSL request made. In the
rewrite phase (early), it will use a sub-request to see what would be
returned for that URI. Once it has that information, it throws it all
away, and either then issues a redirect to HTTP, or fetches the
resource again.
I think the sub request would avoid an SSL request, and be entirely
internal, but I'm not 100% sure on that.
Thinking about it, you may need to tweak the rules so that it is like so:
RewriteCond %{HTTPS} On
RewriteCond ! %{IS_SUBREQ} true
RewriteCond ! -U %{REQUEST_URI}
RewriteRule (.*) http://%{HTTP_HOST}%{REQUEST_URI}
IE exclude subrequests from recursively invoking the lookahead.
Cheers
Tom
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