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From matt farey <matt.fa...@gmail.com>
Subject Re: [users@httpd] Stripping white space from HTML
Date Sun, 11 Mar 2007 23:27:00 GMT


Grant wrote:
>> As I understand it, the reason why you wish the whitespace to be reduced
>> is so you look at the source within your browser, and that you plan to
>> use mod_deflate later ro reduce bandwidth (which is surely not too much
>> of a problem - it's probably equivalent to resampling a few of your
>> images by 5% here and there, or optimising your caching!), but you can't
>> reduce the whitespace inside your application logic (which is where the
>> problem should be fixed) because you don't have control over the code.
>>
>> You have 3 (1,2,4) really good (performance neutral) options not
>> mentioned so far,
>> 1) use a whitespace stripping http proxy you run on your LAN
>> 2) use mod security, removewhitespace in response body
>> 3) use a rewrite rule to a reg exp based whitespace server-side script
>> which serves each page of your application.
>> 4) similar to (3) use an autoprepend rule to serve your white space
>> laden pages through a reg exp based whitespace stripping script.
>>
>> I would probably go for 1,3 or 4, because they are so easy.
>>
>> (2) carries a performance hit, but use of mod security is highly
>> regarded and I would say is an esssential part of protecting an
>> application such as yours - one for which you do not own and cannot
>> change the code.
>
> Thanks Matt.  3 and 4 sound interesting.  How could I configure
> something like that considering my <Location /> block:
>
> <Location />
>       SetHandler perl-script
>       PerlResponseHandler Interchange::Link
>       PerlOptions +GlobalRequest
>       PerlSetVar InterchangeServer /path/to/socket
> </Location>
>
> mod_security also sounds interesting.  It's pretty tricky to set up
> though?
>
> - Grant
>
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>
sorry grant that should have been "Apache 2.0.26" not "Apache 2.0.46"
for using

AddOutputFilter DEFLATE pl


-- 
Matthew Farey



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