PHP Push notification service, feedback is empty

Question

The push works just fine, the problem is that the feedback is empty. I need to delete the tokens that have expired or have an invalid status. Here is my push code:

// Push code example
$ctx = stream_context_create();
stream_context_set_option($ctx, 'ssl', 'local_cert', $certificateName);
//stream_context_set_option($ctx, 'ssl', 'verify_peer', false);
//stream_context_set_option($ctx, 'ssl', 'passphrase', $passphrase);

// Open a connection to the APNS server
$fp = stream_socket_client('ssl://gateway.sandbox.push.apple.com:2195', $err,$errstr, 60, STREAM_CLIENT_CONNECT|STREAM_CLIENT_PERSISTENT, $ctx);

if (!$fp) {
    exit("Failed to connect: $err $errstr" . PHP_EOL);
}

// Create the payload body
$body['aps'] = array(
    'alert' => $message,
    'sound' => 'default'
);

// Encode the payload as JSON
$payload = json_encode($body);

// Build the binary notification
$msg = chr(0) . pack('n', 32) . pack('H*', $deviceToken) . pack('n', strlen($payload)) . $payload;

// Send it to the server
$result = fwrite($fp, $msg, strlen($msg));

if (!$result) {
    echo '<p>The message has not been sent '. PHP_EOL;
} else {
    echo '<p>The message has been sent  ' . PHP_EOL;
}

// Close the connection to the server
fclose($fp);

And for the feedback code I have tried 1.

$ctx = stream_context_create();
stream_context_set_option($ctx, 'ssl', 'local_cert', $certificateName);
stream_context_set_option($ctx, 'ssl', 'verify_peer', false);
// assume the private key passphase was removed.
// stream_context_set_option($ctx, 'ssl', 'passphrase', $pass);

$fp = stream_socket_client('ssl://feedback.sandbox.push.apple.com:2196', $error, $errorString, 60, STREAM_CLIENT_CONNECT, $ctx);
// production server is ssl://feedback.push.apple.com:2196

if (!$fp) {
    //echo "Failed to connect feedback server: $err $errstr\n";
    return;
} else {
  // echo "Connection to feedback server OK\n";
}

echo "APNS feedback results\n";
while ($devcon = fread($fp, 38)) {
    $arr = unpack("H*", $devcon); 
    $rawhex = trim(implode("", $arr));
    $feedbackTime = hexdec(substr($rawhex, 0, 8)); 
    $feedbackDate = date('Y-m-d H:i', $feedbackTime); 
    $feedbackLen = hexdec(substr($rawhex, 8, 4)); 
    $feedbackDeviceToken = substr($rawhex, 12, 64);
    echo "TIMESTAMP:" . $feedbackDate . "\n";
    echo "DEVICE ID:" . $feedbackDeviceToken. "\n\n";
}
fclose($fp);

and the result is empty.

2. // set default timezone date_default_timezone_set('Europe/Bucharest');

// Report all PHP errors
error_reporting(-1);

// Using Autoload all classes are loaded on-demand
//require_once 'ApnsPHP/Autoload.php';
$feedback = new ApnsPHP_Feedback(
    ApnsPHP_Abstract::ENVIRONMENT_SANDBOX,
    $certificateName
);

// Connect to the Apple Push Notification Feedback Service
$feedback->connect();

$aDeviceTokens = $feedback->receive();
if (!empty($aDeviceTokens)) {
    var_dump($aDeviceTokens . '<br><br>');
}



// Disconnect from the Apple Push Notification Feedback Service
$feedback->disconnect();

Also with an empty result

3.

// create context stream $stream_context = stream_context_create();

stream_context_set_option($stream_context, 'ssl', 'local_cert', $certificateName);
stream_context_set_option($streamContext, 'ssl', 'verify_peer', false);
$apns = stream_socket_client('ssl://feedback.sandbox.push.apple.com:2196', $errcode, $errstr, 60, STREAM_CLIENT_CONNECT, $stream_context);
if (!$apns) {
    echo "ERROR $errcode: $errstr\n";
} else {
    $feedback_tokens = array();
    //and read the data on the connection:
    while (!feof($apns)) {
        $data = fread($apns, 38);
        if (strlen($data)) {
            $feedback_tokens[] = unpack("N1timestamp/n1length/H*devtoken", $data);
        }
    }
    var_dump($feedback_tokens);

Also with an empty result.... please help.

Answer 1

Apple sandbox feedback server seems to return no inactive tokens, although production environment seems to be working fine.
Have a look at this thread: Apple Push Notification Feedback Service - how frequently does it check

Suggested solution is to have two development apps on your device and then to delete one. The deleted one should appear in the list of inactive tokens.