# Zend_Mobile_Push_Mpns

Zend_Mobile_Push_Mpns provides the ability to send push notifications to Windows Phone. MPNS allows the sending of 3 different types of notifications; which common behavior is in the Zend_Mobile_Push_Message_Mpns base. Followed by specific classes for Raw, Toast and Tile notifications.

## Pushing Messages

Prior to pushing messages; you must implement the practices outlined on Receiving Push Notifications for Windows Phone.

When implementing MPNS; you have several components that you will utilize. Zend_Mobile_Push_Mpns which contains the server components and Zend_Mobile_Push_Message_Mpns_Raw which allows you to send raw notifications, Zend_Mobile_Push_Message_Mpns_Toast which allows you to send toast notifications, and Zend_Mobile_Push_Message_Mpns_Tile which allows you to send tile notifications. Each message sent must do an HTTP request; so remember this when sending in large batches.

The actual implementation of the code is fairly minimal; however, considerations to error handling must be taken.

    $mpns = new Zend_Mobile_Push_Mpns();
    $messages = array();

    // raw notification
    $message = new Zend_Mobile_Push_Message_Mpns_Raw();
    $message->setToken('http://sn1.notify.live.net/throttledthirdparty/01.00/THETOKEN');
    $message->setMessage('<notification><foo id="bar" /></notification>');
    $messages[] = $message;

    // toast message
    $message = new Zend_Mobile_Push_Message_Mpns_Toast();
    $message->setToken('http://sn1.notify.live.net/throttledthirdparty/01.00/THETOKEN');
    $message->setTitle('Foo');
    $message->setMessage('Bar');
    $messages[] = $message;

    // tile message
    $message = new Zend_Mobile_Push_Mpns_Tile();
    $message->setToken('http://sn1.notify.live.net/throttledthirdparty/01.00/THETOKEN');
    $message->setBackgroundImage('foo.bar');
    $message->setCount(1);
    $message->setTitle('Bar Foo');
    $messages[] = $message;

    foreach ($messages as $m) {
        try {
            $mpns->send($m);
        } catch (Zend_Mobile_Push_Exception_InvalidToken $e) {
            echo 'Remove token: ' . $m->getToken() . PHP_EOL;
        } catch (Zend_Mobile_Push_Exception $e) {
            echo 'Error occurred, token: ' . $m->getToken() . ' - ' . $e->getMessage() . PHP_EOL;
        }
    }

Exceptions and Remediation Techniques

Exception | Meaning | Handling
--- | --- | ---
Zend_Mobile_Push_Exception | These types of exceptions are more generic in nature and are thrown either from MPNS or internally on input validation | Read the message and determine remediation steps.
Zend_Mobile_Push_Exception_DeviceQuotaExceeded | You have sent too many messages to this device; you may retry again later. | Try again later or implement Exponential Backoff .
Zend_Mobile_Push_Exception_InvalidPayload | Generally the payload will not throw an exception unless the size of the payload is too large or it is missing required content. | Check the size of the payload is within the requirements of MPNS
Zend_Mobile_Push_Exception_InvalidToken | Any form of an invalid token will be if the device is no longer subscribed, inactive or not valid. | In some cases you may attempt to resend in an hour; this will be stated in the exception. Otherwise you will want to remove the token from being sent to again.
Zend_Mobile_Push_Exception_QuotaExceeded | You have reached the per-day throttling. | Per-day throttling is only on unauthenticated web services; you will need to register your application for notifications.

## Advanced Messages

MPNS provides the ability for sending more advanced messages; for instance the examples above show the most basic implementation of a message. Zend_Mobile_Push_Message_Mpns_* allows you to do far more advanced messaging outlined below.

### Tile Messages

Tile messages have additional optional attributes for Windows Phone 7.1+; you must ensure that you are sending to a device with the proper version otherwise your notification will fail.

    $message = new Zend_Mobile_Push_Message_Mpns_Tile();
    $message->setToken('http://sn1.notify.live.net/throttledthirdparty/01.00/THETOKEN'); // REPLACE WITH NOTIFICATION URI FROM MPNS
    $message->setBackgroundImage('foo.jpg');
    $message->setCount(1);
    $message->setTitle('Bar');

    // other optional attributes for wp7.1+
    $message->setTileId('/Foo.xaml');
    $message->setBackBackgroundImage('blue.jpg');
    $message->setBackTitle('Bar');
    $message->setBackContent('Foo Bar');

### Toast Messages

Toast messages have additional optional attributes for Windows Phone 7.1+; you must ensure that you are sending to a device with the proper version otherwise your notification will fail.

    $message = new Zend_Mobile_Push_Message_Mpns_Toast();
    $message->setToken('http://sn1.notify.live.net/throttledthirdparty/01.00/THETOKEN'); // REPLACE WITH NOTIFICATION URI FROM MPNS
    $message->setTitle('Foo');
    $message->setMessage('Bar');

    // optional attributes for wp7.1+
    $message->setParams('?bar=foo'); //optional parameters