Result of InternalServerError in sending Remote Push Notification to iOS using GCM in PHP

Question

I tried to implement Google Cloud Messaging (GCM) for iOS in my App. I tried the codes provided on the pod GcmExample Xcode Project and wrote a PHP script the will send the request via PHP cURL.

My PHP code is as follows:

gcmPush(
    "kU6GAbdQEg0:APA91bGSF42WITzubJ9lwQ2qUqL4ETtZfQEOthazc4tP1CRhxx8tKSRChwgtFK37-kt7RjG2P_Ncj2bDOONpPVsYkjxCNi3NDhMNWSkJ7pnlR83jdbMJfOKlD1CPXCgAvZjbwpzdeiTa", 
    "This is only a test from GCM for iOS.", 
    "PHP test"
    );

function gcmPush($GCM_regID, $message, $title) {

    $GOOGLE_API_KEY = "AIzaSyAd8pw7_J8i-FPswnhUMkFCDHtufSCFFTc";
    $url = 'https://android.googleapis.com/gcm/send';

    $fields = array(
        'to' => $GCM_regID,
        'notification' => array(
            'sound' => 'default',
            'badge' => '1',
            'body' => $message,
            'title' => $title
        )
    );

    $headers = array(
        'Authorization: key=' . $GOOGLE_API_KEY,
        'Content-Type: application/json'
    );

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($fields));

    $result = curl_exec($ch);
    echo "\r\n";
    if ($result === FALSE) {
        die('Failed: ' . curl_error($ch) . "\r\n");
    } else {

        echo "Success\r\n";   
    }

    curl_close($ch);
}

The request is successful, however the result from the Google GCM server contains the following:

{"multicast_id":6164898138439370127,"success":0,"failure":1,"canonical_ids":0,"results":[{"error":"InternalServerError"}]}

Is there anything wrong with the Google API Key? I tried this script to send Remote Notification to the GcmExample.xcworkspace and it worked. I would like to know how to resolve this.

Answer 1

If your encounter this error message in GCM for iOS {"error":"InternalServerError"}, Make sure you uploaded the correct P12 certificate in the Google Developer Console. And Make sure the Provisioning Profile is setup correctly for the Signing Certificate and set the following as follows:

• For Development:

  @{kGGLInstanceIDRegisterAPNSOption:deviceToken, kGGLInstanceIDAPNSServerTypeSandboxOption:@YES};

• For Production / Distribution:

  @{kGGLInstanceIDRegisterAPNSOption:deviceToken, kGGLInstanceIDAPNSServerTypeSandboxOption:@NO};