title: Right Way for changing timeoutIntervalForRequest in Alamofire
body: <p>I changed <strong>timeoutIntervalForRequest</strong> with </p>
  
  <pre><code>let manager = Alamofire.SessionManager.default
  manager.session.configuration.timeoutIntervalForRequest = 3    
  manager.request(url).response {}
  </code></pre>
  
  <p>but seems not worked, Any suggestion?</p>