class Bundler::URI::Generic

def self.use_proxy?(hostname, addr, port, no_proxy) # :nodoc:
  hostname = hostname.downcase
  dothostname = ".#{hostname}"
  no_proxy.scan(/([^:,\s]+)(?::(\d+))?/) {|p_host, p_port|
    if !p_port || port == p_port.to_i
      if p_host.start_with?('.')
        return false if hostname.end_with?(p_host.downcase)
      else
        return false if dothostname.end_with?(".#{p_host.downcase}")
      end
      if addr
        begin
          return false if IPAddr.new(p_host).include?(addr)
        rescue IPAddr::InvalidAddressError
          next
        end
      end
    end
  }
  true
end