class HeadAuth extends AsyncTask<String, Void, String> {
		private Exception exception;

		@Override
		protected String doInBackground(String... strings) {
			try {
				ExtractedMethod exm = new ExtractedMethod();

                                //取得server回傳stastus code
				final int responseString = exm.run(HTCode.Code.HEAD, 1, conn_adv, true, "", -1, false).getHTCode();

                                //call resultCodeAuth
				resultCodeAuth(responseString);

                                //debug用
				runOnUiThread(new Runnable() {
					public void run() {
						Toast.makeText(MainActivity.this, "HEAD status: " + responseString,  								Toast.LENGTH_SHORT).show();
					}
				});
			} catch (final Exception io) {
				runOnUiThread(new Runnable() {
					public void run() {
					Toast.makeText(MainActivity.this, "HEAD exception:  " + io,Toast.LENGTH_SHORT).show();
					}
				});
			}
			return "EXCEPTION";
		}
	}


	public void resultCodeAuth( int resultHTCode) {
		//confrim user's account info

	}