----boundary-LibPST-iamunique-798004484_-_-
Content-type: text/plain
Folks,
I have implemented most of my desired Updates process but am
not happy with it since not all web pages contain the text
"Last-Modified" in their header. There is an HTTP method
modifier "If-Modified-Since" which returns a code of "304"
if the page has not been modified since a specified date,
however, that date is assumed to have been previously
obtained in some manner supposedly from the "Last-Modified"
field in a header. This is a catch-22. I do not see how
to obtain page dates other than what I have just stated.
I may abandon this project unless someone can show me a
guaranteed method of determining page dates. The W3C
documentation on HTTP 1.1 seems very "sloppy" to me
since the words "may" and "should" are used frequently
while the words "must" hardly occur.
Having said this I found a lovely freeware program called
WebMon
http://www.markwell.btinternet.co.uk/webmon/
that seems to work just fine on those pages for which I could
not determine a date. Hence there is some magic involved
of which I am not aware.
Why don't we all download WebMon and use it to keep ourselves
coordinated?
-Doug Danforth
--- BlackBox
--- send subject HELP or UNSUBSCRIBE to blackbox{([at]})nowhere.xy
----boundary-LibPST-iamunique-798004484_-_-
Content-type: application/rtf
Content-transfer-encoding: base64
Content-Disposition: attachment; filename="rtf-body.rtf"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----boundary-LibPST-iamunique-798004484_-_---
Received on Sat Feb 24 2007 - 18:13:36 UTC