[San-Diego-pm] An old yet persistent problem

Joel Fentin joel at fentin.com
Mon Sep 27 22:25:50 PDT 2010


On 9/27/2010 9:45 PM, Urivan Flores wrote:

> Joel,
>
> The following has always worked when I had that need:
>
> print "<a href='imagename.jpg?".time()."'>";

Nice. Short simple understandable. Even for me.

Do you have anything short simple & understandable which does what 
the F5 button does? Something which loads the entire webpage from 
the server.

At Al's suggestion I have been to 
http://en.wikipedia.org/wiki/HTTP_ETag and have a partial 
understanding.

+ There was nothing I saw that I could drop into my code. When 
they say "Typical usage", I didn't get if it goes in a <tag>, in 
the head or the body.

+ ETag: "686897696a7c876b7e" (another random number?)

+ If-None-Match: "686897696a7c876b7e" (is there a "then" that 
matches the "if"?

+ Do you use both ETag: & If-None-Match:  ?

-- 
Joel Fentin       tel: 760-749-8863
Biz Website:      http://fentin.com
Personal Website: http://fentin.com/me


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