CODEWITHSUNDEEP
javaandroidfirebasefirebase-cloud-messaging
user7652543
user7652543

Reputation:

Java Android FCM sending message to user Server returned HTTP response code

I did this :

public class PushNotifictionHelper {
    public final static String AUTH_KEY_FCM = "AIzaSyD63pfTvnwhe9WVuIe.........";
    public final static String API_URL_FCM = "https://fcm.googleapis.com/fcm/send";

    public static String sendPushNotification(String deviceToken)
            throws IOException, JSONException {
        String result = "";
        URL url = new URL(API_URL_FCM);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();

        conn.setUseCaches(false);
        conn.setDoInput(true);
        conn.setDoOutput(true);

        conn.setRequestMethod("POST");
        conn.setRequestProperty("Authorization", "key=" + AUTH_KEY_FCM);
        conn.setRequestProperty("Content-Type", "application/json");

        JSONObject json = new JSONObject();

        json.put("to", deviceToken.trim());
        JSONObject info = new JSONObject();
        info.put("title", "notification title"); // Notification title
        info.put("body", "message body"); // Notification
        // body
        json.put("notification", info);
        try {
            OutputStreamWriter wr = new OutputStreamWriter(
                    conn.getOutputStream());
            wr.write(json.toString());
            wr.flush();

            BufferedReader br = new BufferedReader(new InputStreamReader(
                    (conn.getInputStream())));

            String output;
            System.out.println("Output from Server .... \n");
            while ((output = br.readLine()) != null) {
                System.out.println(output);
            }
            result = "OK";
        } catch (Exception e) {
            e.printStackTrace();
            result = "BAD";
        }
        System.out.println("GCM Notification is sent successfully");

        return result;

    }

    public static void main(String [] args){
        try {
            PushNotifictionHelper.sendPushNotification("ep51x3Ckmig:APA91bG4PdoJC7zGlV0JPmCA49jmqJCkeSPH1QzF9byxdH1nRlFOVyAi9ppO2ygoSpp8s44o1oGO8n-HCJDB_oZAZ6WCwFD2a9yAFmKIpKhmPXakeLf-ktqPnzwf-GFziv7_nMdVPIci");
        } catch (IOException e) {
            e.printStackTrace();
        } catch (JSONException e) {
            e.printStackTrace();
        }
    }
}

And when I run this in console I see

java.io.IOException: Server returned HTTP response code: 401 for URL: https://fcm.googleapis.com/fcm/send

an AUTH_KEY_FCM I get from web from this:

Klucz interfejsu Web API AIzaSyD63pfTvnwhe9WVuIe.........

Upvotes: 1

Views: 3713

Answers (1)

AL.
AL.

Reputation: 37808

The 401 error refers to an Authentication error. From the docs:

The sender account used to send a message couldn't be authenticated. Possible causes are:

  • Authorization header missing or with invalid syntax in HTTP request.
  • Invalid project number sent as key.
  • Key valid but with FCM service disabled.
  • Request originated from a server not whitelisted in the Server key IPs.

Check that the token you're sending inside the Authentication header is the correct Server key associated with your project. See Checking the validity of a Server key for details.

When using FCM, you should always make use of the Server Key (not the Web API Key) seen in the Cloud Messaging Tab in your Firebase Console.

Upvotes: 4

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