var apiPath : String = "/api/list/"
let configuration = NSURLSessionConfiguration.defaultSessionConfiguration()
configuration.timeoutIntervalForRequest = 60
let manager = Alamofire.Manager(configuration: configuration)
manager.session.configuration.HTTPAdditionalHeaders = ["_token" : self._token]
manager.request(.GET,self._host + self._url + apiPath,parameters: nil)
    .responseSwiftyJSON ({ (request,response,resultJson,error) in
        if (resultJson["Success"]) {
             //get list success
        } else {
            println("request : \(request)")
            println("response : \(response)")
            println("resultJson : \(resultJson)")
            println("error : \(error)")
        }

})

我遇到了一些问题

Alamofire版本1.2.1：没问题

Alamofire版本1.2.2& 1.2.3：

request : { URL: https://test.com/api/list/ }

response : nil

resultJson : null

error : Optional(Error Domain=NSURLErrorDomain Code=-999 “cancelled”
UserInfo=0x7feb92c434f0 {NSErrorFailingURLKey=https
://test.com/api/list/,NSLocalizedDescription=cancelled,
NSErrorFailingURLStringKey=http s://test.com/api/list/})

为什么响应为nil且在版本1.2.2和1.2.3上resultJson为null
请帮我解决这段代码中的问题..