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Malfist
Asked: 2009-07-16 12:21:01 +0800 CST

Content Encoding Error when trying to use GZip on Apache

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I'm trying to enable Gzip on my webserver and am not succeeding. By all means, I should have by now, I've done it before but success is eluding me.

I have this in my httpd.conf

<Location "C:/Program Files (x86)/Apache Software Foundation/Apache2.2/htdocs/bt/web">
    # Insert filter
    SetOutputFilter DEFLATE

    # Netscape 4.x has some problems...
    BrowserMatch ^Mozilla/4 gzip-only-text/html

    # Netscape 4.06-4.08 have some more problems
    BrowserMatch ^Mozilla/4\.0[678] no-gzip

    # MSIE masquerades as Netscape, but it is fine
    # BrowserMatch \bMSIE !no-gzip !gzip-only-text/html

    # NOTE: Due to a bug in mod_setenvif up to Apache 2.0.48
    # the above regex won't work. You can use the following
    # workaround to get the desired effect:
    BrowserMatch \bMSI[E] !no-gzip !gzip-only-text/html

    # Don't compress images
    SetEnvIfNoCase Request_URI \
    \.(?:gif|jpe?g|png)$ no-gzip dont-vary

    # Make sure proxies don't deliver the wrong content
    Header append Vary User-Agent env=!dont-vary
</Location>

And

<IfModule mod_deflate.c>
<FilesMatch "\.(js|css|html|htm)$">
SetOutputFilter DEFLATE
</FilesMatch>
</IfModule>

mod_deflate is enabled.

What am I doing wrong?

windows apache-2.2

1 Answers

  1. The first issue is that you have the element with a directory from the file system...

    This is from the Apache manual:

    When to use <Location>. Use <Location> to apply directives to content that lives outside the filesystem. For content that lives in the filesystem, use <Directory> and <Files>. An exception is <Location />, which is an easy way to apply a configuration to the entire server.

    When I setup mod_deflate on Apache I use this setup:

    # --------------------------------------------------------
# Deflate Module Configuration
# --------------------------------------------------------
<IfModule deflate_module>
  # Set the location to webservers root
  <Location />
    # Insert the filters
    SetOutputFilter DEFLATE

    # Netscape 4.x has some problems
    BrowserMatch ^Mozilla/4 gzip-only-text/html
    # Netscape 4.06-4.08 have some more problems
    BrowserMatch ^Mozilla/4.0[678] no-gzip
    # MSIE masquerades as Netscape, but it is fine
    BrowserMatch \bMSIE !no-gzip !gzip-only-text/html

    # Make sure proxies don't deliver the wrong content
    Header append Vary User-Agent env=!dont-vary

    # Make sure to never zip binaries (ie6 and chrome has issues with this.)
    SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png)$ no-gzip dont-vary
    SetEnvIfNoCase Request_URI \.(?:exe|t?gz|zip|bz2|sit|rar)$ no-gzip dont-vary
    SetEnvIfNoCase Request_URI \.pdf$ no-gzip dont-vary
  </Location>

    # Enable mod_deflate logging by uncommenting these lines
    #DeflateFilterNote Input instream
    #DeflateFilterNote Output outstream
    #DeflateFilterNote Ratio ratio

    #LogFormat '"%r" %{outstream}n/%{instream}n (%{ratio}n%%)' deflate
    #CustomLog logs/deflate_log deflate 
</IfModule>
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