On Wed, 21 Jan 2004, pascal watteel wrote:
>Very simple when you retrieve a page with http.. the first thing the
>http protocol sends to you is how big it is. In bits... then after
>that there is some handshaking and the http get begins.
I expect that most web pages would change in size from one day to the
next even without any change to the listings, because they have
navigation bars, today's date and so on.
It's also part of the http protocol to see when a page was last
changed, and not download it if your local cached copy is
current. But again that won't work for most websites we're concerned
with.
--
Ed Avis <ed@xxxxxxxxxxx>
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