title: python pycurl connection timeout problems
body: <p>I set both connection timeout and timeout to 30s in the program, but it always throw connection timeout at 7s, are there other settings taking control of the time?  (my program runs on centos 7 and python2.7)</p>
  
  <pre><code>c.setopt(pycurl.CONNECTTIMEOUT, 30)
  c.setopt(pycurl.TIMEOUT, 30)
  </code></pre>