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From Greg Stein <>
Subject Re: Byterange filter.
Date Wed, 08 Nov 2000 08:24:55 GMT
No problem. I see it and am on it... Should have something done in about an

On Tue, Nov 07, 2000 at 10:08:11PM -0800, wrote:
> I have spent all day working on a byte-range filter, and it is 99.9%
> done.  As far as I can tell, I have the protocol correct.  I have read the
> RFC, and I have compared the output to what 1.3 returns.  The results look
> good, but I can't get the Adobe Acrobat plug-in to work with it.
> The only difference between what 1.3 and this filter output is that 1.3
> has a content-length, and 2.0 can't add one cleanly.  The problem is that
> this filter is added by the http_header_filter, so it goes after the
> header filter, which means that modifying a header value is
> non-trivial.  Also, the headers don't actually flow through the byterange
> filter, so we would need a hack_headers_filter that is installed between
> the header_filter and the core_filter.  This seems like an exceptionally
> bad idea, because the spec says we don't need a Content-Length.
> I should mention that I can compute the Content-Length for the data
> itself, but I cannot add the length of the byterange headers easily.  If
> anybody has any ideas, I would love to hear them.
> I am committing this, even though it doesn't work perfectly.  It works
> better than what we have right now, because it uses filters instead of
> BUFF to do the work.  I have been unable to get byte-ranges as they
> currently stand to work at all, so I figure at least this is a step
> forward.
> Could some other people please look at the output and try to find the
> problem.  If nobody finds anything, I will look at this again tomorrow or
> the next day.
> BTW, this should basically remove BUFF finally.  I am leaving BUFF in the
> code, because the proxy still needs it, but I will be removing all
> references to it from the main server tomorrow.
> Ryan
> _______________________________________________________________________________
> Ryan Bloom               
> 406 29th St.
> San Francisco, CA 94131
> -------------------------------------------------------------------------------

Greg Stein,

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