try:
  import requests
except ImportError:
  class requests():
    def get(url, timeout):
      raise ImportError("ImportError: Please install requests library to make HTTP/s requests.")
class HttpProtocol():
    def get(url):
        try:
          r = requests.get(url, timeout=5)
        except Exception as e:
          return ("text/error", ["error\n", str(e)])
        return (r.headers['content-type'].split(';')[0], r)