title: Azure error:Retry policy did not allow for a retry,where is wrong?
body: <p><strong>I use this code to call azure api:</strong>
  <a href="http://pythonfiddle.com/sjj/" rel="nofollow noreferrer">http://pythonfiddle.com/sjj/</a></p>
  
  <p><strong>But the error message is:</strong></p>
  
  <pre><code>    Client-Request-ID=b68d2b74-5e54-11e8-9b68-b025aa1fef84 Retry policy did not allow for a retry: , HTTP status code=Unknown, Exception=HTTPSConnectionPool(host='dapsjj.blob.core.windows.net', port=443): Max retries exceeded with url: /container1/top_201819.csv (Caused by NewConnectionError('&lt;urllib3.connection.VerifiedHTTPSConnection object at 0x0000024832F0C668&gt;: Failed to establish a new connection: [Errno 11001] getaddrinfo failed',)).
  Traceback (most recent call last):
    File "E:\Anaconda3\lib\site-packages\urllib3\connection.py", line 141, in _new_conn
      (self.host, self.port), self.timeout, **extra_kw)
    File "E:\Anaconda3\lib\site-packages\urllib3\util\connection.py", line 60, in create_connection
      for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM):
    File "E:\Anaconda3\lib\socket.py", line 745, in getaddrinfo
      for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
  socket.gaierror: [Errno 11001] getaddrinfo failed
  </code></pre>
  
  <p>I don not know where is wrong,can you tell me? </p>