From: Axel Etzold <AEtzold@...>
Date: 2008-09-11T07:40:25+09:00
Subject: Re: How to check if a webpage exists


-------- Original-Nachricht --------
> Datum: Thu, 11 Sep 2008 07:32:40 +0900
> Von: "Todd Benson" <caduceass@gmail.com>
> An: ruby-talk@ruby-lang.org
> Betreff: Re: How to check if a webpage exists

> On Wed, Sep 10, 2008 at 4:38 PM, Davide Benini <nutsmuggler@hotmail.com>
> wrote:
> > 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
> 
> Not really an answer, but should point you in the right direction.
> Also, I can't test with Hpricot right now due to gem install issues.
> But, using open-uri...
> 
> require 'open-uri'; begin; open('http://www.www.www') {} rescue '404
> error'; end
> 
> Todd

Dear Davide,

I was just about to suggest the same thing. It works on my Ubuntu machine.

Best regards,

Axel 
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