Issues with gzip compression and ETag and Vary Headers

Discussion in 'Install/Configuration' started by mrtonyg, Jan 21, 2011.

  1. mrtonyg

    mrtonyg New Member

    Hello all,

    I am on a shared hosting account and need assistance.

    The following RedBot header test screenshots show my concerns.

    The first screenshot shows content delivered without any compression. No errors reported...all is good.

    http://karmd.com/no_gzip_no_errors.png

    The next screenshot with gzip enabled shows the errors I am concerned with. The vary and Etags response headers don't match for the compressed document.

    http://karmd.com/gzip_errors.png

    The next one, I tried adding a vary header and it eliminated the vary error but included a 2nd vary response header. According to HTPP documentation
    there should not be duplicate header items. I tried "append" and "set" on the htaccess line for the vary header with the same results.

    http://karmd.com/added_vary_header_double_entry.png

    Furthermore, is there a way to unset the Etag header?

    How do I fix these errors?

    Thanks in advance,

    Tony
    Last edited: Jan 23, 2011
  2. webizen

    webizen New Member

    The pictures are too small. Please resend with bigger ones or PM the URLs in question.
  3. mrtonyg

    mrtonyg New Member

    I just realized the images are way too small.
  4. mrtonyg

    mrtonyg New Member

    The fullsize images are at (no links until 5 posts):

    karmd.com/no_gzip_no_errors.png

    karmd.com/gzip_errors.png

    karmd.com/added_vary_header_double_entry.png
  5. mrtonyg

    mrtonyg New Member

    Ideas...anyone?
  6. mrtonyg

    mrtonyg New Member

    Ideas, suggestions...
  7. mistwang

    mistwang LiteSpeed Staff

    I do not think we will do anything to those "errors", to just make RedBot happy. Nothing is break.
    You have to take it as is or use other web server if it bothers you.
  8. mrtonyg

    mrtonyg New Member

    Doubling up on Vary headers is not the right way to do things.

    Removing the ETag response header is recommended by Google and Yahoo, apparently LS can't do that.

    Good luck with your sub-par support forum and server software.
  9. Cameo

    Cameo New Member

    Please add FileETag support!!

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