title: Alamofire responseSerializationFailed(Alamofire.AFError.ResponseSerializationFailureReason.inputDataNilOrZeroLength)
body: <p>I had some working code that was getting results from a MySQL DB on a remote web server.  It is no longer working and I keep getting the message <code>responseSerializationFailed(Alamofire.AFError.ResponseSerializationFailureReason.inputDataNilOrZeroLength)</code>.  Here is some code...</p>
  
  <pre><code>    Alamofire.request(ADS_URL, method: .get).validate().responseJSON { response in
          print("Request: \(String(describing: response.request))")   // original url request
          print("Response: \(String(describing: response.response))") // http url response
          print("Result: \(response.result)")                         // response serialization result
  
          switch response.result {
          case .success(let value):
              let json = JSON(value)
              print ("JSON: \(json)")
  
              if let data = response.data, let utf8Text = String(data: data, encoding: .utf8) {
                  print("Data: \(utf8Text)") // original server data as UTF8 string
              }
  
          case .failure(let error):
              print("Error while querying database: \(String(describing: error))")
              return
          }
      }
  </code></pre>
  
  <p>I am also using SwiftyJSON.  Here are the results of the code...</p>
  
  <pre><code>Request: Optional(http://doyouado.com/adscan/get_ads)
  
  Response: Optional(&lt;NSHTTPURLResponse: 0x17502f3a0&gt; { URL: http://doyouado.com/adscan/get_ads } { status code: 200, headers {
      Connection = "keep-alive";
      "Content-Length" = 0;
      "Content-Type" = "text/html; charset=UTF-8";
      Date = "Mon, 18 Sep 2017 16:04:37 GMT";
      Server = "nginx/1.12.1";
      "Set-Cookie" = "ado_session=a%3A5%3A%7Bs%3A10%3A%22session_id%22%3Bs%3A32%3A%225019d90891c70c81df8ebc2fe754a68f%22%3Bs%3A10%3A%22ip_address%22%3Bs%3A15%3A%22109.150.214.128%22%3Bs%3A10%3A%22user_agent%22%3Bs%3A86%3A%22ADoBroadcaster%2F1.0+%28com.GaryFrank.ADoBroadcaster%3B+build%3A1%3B+iOS+10.3.3%29+Alamofire%2F4.5.0%22%3Bs%3A13%3A%22last_activity%22%3Bi%3A1505750677%3Bs%3A9%3A%22user_data%22%3Bs%3A0%3A%22%22%3B%7D3130ef6f5541e6f944da5a5a1292350bf203fa1b; expires=Mon, 18-Sep-2017 18:04:37 GMT; Max-Age=7200; path=/";
  } })
  
  Result: FAILURE  
  
  Error: responseSerializationFailed(Alamofire.AFError.ResponseSerializationFailureReason.inputDataNilOrZeroLength)
  </code></pre>
  
  <p>I have tried using <code>.response</code> and <code>.responseString</code>, but I get no information returned.  I am completley stumped.  This was all working fine.  Hopefully there is someone that can shed some light on this?</p>