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Check If A URL Exists

02.22.2010
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        Source: <a href="http://snippets.dzone.com/posts/show/4638">Ruby remote file checker</a> [dzone.com]

<snip>

require 'open-uri'
require 'net/http'

def remote_file_exists?(url)
  url = URI.parse(url)
  Net::HTTP.start(url.host, url.port) do |http|
    return http.head(url.request_uri).code == "200"
  end
end

</snip>

remote_file_exists? 'http://www.www.www'     #=> false
remote_file_exists? 'http://www.wired.com/'  #=> true
remote_file_exists? 'http://www.wired.com/blogs/'        #=> true
remote_file_exists? 'http://www.wired.com/i-love-ruby/'  #=> false

Comments

Snippets Manager replied on Wed, 2009/07/01 - 7:42am

require 'rubygems' require 'rest-open-uri' def remote_file_exist?(url) open( url , :method => :head).status rescue false end
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