let username = "user"
     let password = "pass"

     let loginString = String(format: "%@:%@", username, password)
     let loginData = loginString.data(using: String.Encoding.utf8)!
     let base64LoginString = loginData.base64EncodedString()

     // create the request
     let url = URL(string: "http://xxx.xxx.xxx.com:111/customer")!
     var request = URLRequest(url: url)
     request.httpMethod = "GET"
     request.setValue("Basic (base64LoginString)", forHTTPHeaderField: "Authorization")

     // fire off the request
     // make sure your class conforms to NSURLConnectionDelegate
     let urlConnection = NSURLConnection(request: request, delegate: self)