From: Davide Benini <nutsmuggler@...>
Date: 2008-09-11T06:38:36+09:00
Subject: How to check if a webpage exists

This probably is trivial, but I have been googling for almost 2hs
without finding a viable solution.
Basically I have this rails app which uses hpricot to parse web pages.
There's this line

page = Hpricot( open(url))

If the url is wrong, or the server is down, obviously I get an
exception.
First I tried my luck with

if page = Hpricot( open(url))
  blah blah
end

but this did not work.

Then I started googling like crazy for a method to check if a webpage is
loadable. I only found this thread

http://markmail.org/message/iurqf4ejbndbczqq

I tried the suggested code, it does not work.
Now, I am pretty sure there's a straightforward way of checking whether
a webpage is loadable.
Can you help me?
Thanks in advance,
Davide
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