curl -X POST --header 'Content-Type: application/json' --header 'Accept: application/json' -d '{"username":"tenant@test.org", "password":"tenant"}' 'http://URL/api/auth/login'

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    PostRequest();
}

private void PostRequest(){



    Thread t = new Thread(new Runnable() {
        @Override
        public void run() {

            HttpParams myParams = new BasicHttpParams();

            HttpConnectionParams.setSoTimeout(myParams, 10000);
            HttpConnectionParams.setConnectionTimeout(myParams, 10000); // Timeout

            DefaultHttpClient httpClient = new DefaultHttpClient(myParams);


            HttpPost httpPost = new HttpPost("http://url/api/auth/login");

            httpPost.addHeader("Accept: application/json", "Content-Type: application/json");

            List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>(2);
            nameValuePair.add(new BasicNameValuePair("username", "user"));
            nameValuePair.add(new BasicNameValuePair("password", "pass"));

            try {
                httpPost.setEntity(new UrlEncodedFormEntity(nameValuePair));
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }


            //making POST request.
            try {
                HttpResponse response = httpClient.execute(httpPost);
                // write response to log
                System.out.println("LOG:" + response.toString());
            } catch (ClientProtocolException e) {
                // Log exception
                e.printStackTrace();
            } catch (IOException e) {
                // Log exception
                e.printStackTrace();
            }
        }
    });
    t.start();


}

09-24 11:53:47.080 3781-3867/com.example.david.auth W/DefaultRequestDirector: Authentication error: Unable to respond to any of these challenges: {}