NSURLSession Web service call in Swift

NSURLSession Web service call 

let parameters = ["UserEmail":userMailID, "DeviceUDID": stringUDID] as Dictionary<String, String>

let url = NSURL (string: "Your URL") //change the url

let request = NSMutableURLRequest(URL: url!)

let configuration = NSURLSessionConfiguration.defaultSessionConfiguration()

let session = NSURLSession(configuration: NSURLSessionConfiguration.defaultSessionConfiguration(), delegate: nil, delegateQueue: NSOperationQueue.mainQueue())

                

request.HTTPMethod = "POST" //set http method as POST

request.HTTPBody = try! NSJSONSerialization.dataWithJSONObject(parameters, options: [])

request.addValue("application/json", forHTTPHeaderField: "Content-Type")

request.addValue("application/json", forHTTPHeaderField: "Accept")

//                request.timeoutInterval = 100

let task = session.dataTaskWithRequest(request)

{

    data, response, error in

    guard data != nil else

    {

      // Error response

    }                 

        //RESPONSE HEADER RESULT

                    

        let httpsResponse = response as? NSHTTPURLResponse

        let str = httpsResponse!.allHeaderFields as NSDictionary

        let tokenStr = str["TokenAPI"] as! String

         GlobalData.sharedManager.tokenAPI = tokenStr

         let jsonStr = NSString(data: data!, encoding: NSUTF8StringEncoding)

         self.json = try NSJSONSerialization.JSONObjectWithData      ((jsonStr?.dataUsingEncoding(NSUTF8StringEncoding)!)!, options: .AllowFragments)

       Print(self.json)

         

}

   task.resume()