title: How to retrieve Alamofire response header for a request
body: <p>how can I retrieve response headers for a request? Below is a request I make.</p>
  
  <pre><code>Alamofire.request(.GET, requestUrl, parameters:parameters, headers: headers)
          .responseJSON { response in switch response.result {
          case .Success(let JSON):
  
              ...
  
          case .Failure(let error):
  
              ...
  
      }
  </code></pre>
  
  <p>Thanks in advance!</p>