Google Cloud Functions + Android app

_x000D_ _x000D_ I followed this Google Cloud Function tutorial - https://firebase.google.com/docs/functions/get-started And I was able to deploy the function through node.js on my Mac running Sierra. I am now successfully able to call my addMessage Http Endpoint from a browser, and it successfully adds the message onto my real-time database in the Firebase console. I have also implemented Google Sign In in my app as per this tutorial: https://developers.google.com/identity/sign-in/android/start-integrating However, I am unable to call the addMessage() function from my android app through a standard Http Request. This is my android code: private class HttpSenderTask extends AsyncTask { String testString; String content; @Override protected void onPreExecute() { super.onPreExecute(); testString = text.getText().toString(); } @Override protected String doInBackground(String... strings) { try{ URL url = new URL("**myCloudFunctionlinkFromFirebaseConsole**/addMessage?text=" + testString); HttpURLConnection connection = (HttpURLConnection) url.openConnection(); connection.setRequestMethod("POST"); connection.setDoOutput(true); connection.setConnectTimeout(5000); connection.setReadTimeout(5000); connection.connect(); content = "Done"; } catch (Exception ex){ Log.d(TAG, ex.toString()); } return content; } @Override protected void onPostExecute(String s) { super.onPostExecute(s); } } What am I doing wrong? Also, is there some documentation that can teach us how to write android code for utilizing Cloud Functions? Any help in this matter would be greatly appreciated. Thank you all