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Re: HTTP should be able to transfer part of a document

From: John Franks <john@math.nwu.edu>
Date: Wed, 8 Mar 1995 08:29:00 -0600 (CST)
Message-Id: <199503081429.IAA27824@hopf.math.nwu.edu>
To: http-wg%cuckoo.hpl.hp.com@hplb.hpl.hp.com
According to Adam Dingle:
> In HTTP 1.0 there seems to be no way to retrieve a given 
> part of a document, e.g. bytes 1500000 through 1600000 of 
> a long binary file.  This seems to be an important 
> limitation, but I haven't seen any discussion of adding 
> the capability for partial  document retrieval to the next
> version of HTTP, so I thought I'd bring it up  here.
> I would be very interested to hear any comments about this.

Some of the capability you discusss has been in the WN server since its
beginning and in it predecessor GN.  With the WN server, for example, the



request the corresponding byte and line ranges of file foo.  The lines
version is only allowed for files of type text/*.  The content-type is
often changed.  E.g. a line range from a text/html file is given
content type text/plain.

This has more uses than you might expect, primarily with text/plain files.
See <URL:http://hopf.math.nwu.edu/docs/utility.html#digest>.
See <URL:http://hopf.math.nwu.edu/> for more information about WN.

John Franks
Received on Wednesday, 8 March 1995 06:37:44 UTC

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