class Bundler::Fetcher

def fetch(uri, counter = 0)
  raise HTTPError, "Too many redirects" if counter >= @redirect_limit
  response = request(uri)
  Bundler.ui.debug("HTTP #{response.code} #{response.message}")
  case response
  when Net::HTTPRedirection
    new_uri = URI.parse(response["location"])
    if new_uri.host == uri.host
      new_uri.user = uri.user
      new_uri.password = uri.password
    end
    fetch(new_uri, counter + 1)
  when Net::HTTPSuccess
    response.body
  when Net::HTTPRequestEntityTooLarge
    raise FallbackError, response.body
  else
    raise HTTPError, "#{response.class}: #{response.body}"
  end
end