私は以下のコードを書きました。要件を満たすためにNokogiriを起動するだけで、テストのために実行するとエラーが発生しました。
D:\WIPData\Ruby\Scripts>Nokogiri.rb
C:/Ruby193/lib/ruby/1.9.1/net/http.rb:762:in `initialize': getaddrinfo: No such
host is known. (SocketError)
from C:/Ruby193/lib/ruby/1.9.1/net/http.rb:762:in `open'
from C:/Ruby193/lib/ruby/1.9.1/net/http.rb:762:in `block in connect'
from C:/Ruby193/lib/ruby/1.9.1/timeout.rb:54:in `timeout'
from C:/Ruby193/lib/ruby/1.9.1/timeout.rb:99:in `timeout'
from C:/Ruby193/lib/ruby/1.9.1/net/http.rb:762:in `connect'
from C:/Ruby193/lib/ruby/1.9.1/net/http.rb:755:in `do_start'
from C:/Ruby193/lib/ruby/1.9.1/net/http.rb:744:in `start'
from C:/Ruby193/lib/ruby/1.9.1/open-uri.rb:306:in `open_http'
from C:/Ruby193/lib/ruby/1.9.1/open-uri.rb:775:in `buffer_open'
from C:/Ruby193/lib/ruby/1.9.1/open-uri.rb:203:in `block in open_loop'
from C:/Ruby193/lib/ruby/1.9.1/open-uri.rb:201:in `catch'
from C:/Ruby193/lib/ruby/1.9.1/open-uri.rb:201:in `open_loop'
from C:/Ruby193/lib/ruby/1.9.1/open-uri.rb:146:in `open_uri'
from C:/Ruby193/lib/ruby/1.9.1/open-uri.rb:677:in `open'
from C:/Ruby193/lib/ruby/1.9.1/open-uri.rb:33:in `open'
from D:/WIPData/Ruby/Scripts/Nokogiri.rb:6:in `<main>'
D:\WIPData\Ruby\Scripts>
コード
require 'nokogiri'
require 'open-uri'
# Get a Nokogiri::HTML::Document for the page we’re interested in...
doc = Nokogiri::HTML(open('http://www.google.co.in'))
なぜそうなのか、どうやって修正するのか、アドバイスしてください。