title: pip ConnectTimeoutError
body: <p>When trying to install something using pip I am getting a <code>ConnectTimeoutError</code> error !
  For example, when I try:</p>
  
  <pre><code>pip install 'something'
  </code></pre>
  
  <p>The following error occurs:</p>
  
  <blockquote>
    <p>Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by 'ConnectTimeoutError(, 'Connection to 'some dev server' timed out. (connect timeout=15)')': /.../.../</p>
  </blockquote>
  
  <p>Is my pip behind some proxy?</p>