a gem for the Apple Push Notification Service.

Add to Gemfile

  
    gem 'apns', :git => "https://github.com/NicosKaralis/APNS.git"
  

Convert your certificate

In Keychain access export your certificate as a p12. Then run the following command to convert it to a .pem

  
    openssl pkcs12 -in cert.p12 -out cert.pem -nodes -clcerts
  

After you have your .pem file. Set what host, port, certificate file location on the APNS class:

  
    APNS.host = 'gateway.push.apple.com' 
    # gateway.sandbox.push.apple.com is default

    APNS.pem  = '/path/to/pem/file'
    # this is the file you just created
    
    APNS.port = 2195 
    # this is also the default. Shouldn't ever have to set this, but just in case Apple goes crazy, you can.
  

Then to send a push notification you can either just send a string as the alert or give it a hash for the alert, badge and sound.

  
    device_token = '123abc456def'

    APNS.send_notification(device_token, 'Hello iPhone!' )

    APNS.send_notification(device_token, :alert => 'Hello iPhone!', :badge => 1, :sound => 'default')
  

You can also send multiple notifications using the same connection to Apple:

  
    device_token = '123abc456def'

    n1 = APNS::Notification.new(device_token, 'Hello iPhone!' )

    n2 = APNS::Notification.new(device_token, :alert => 'Hello iPhone!', :badge => 1, :sound => 'default')
    
    APNS.send_notifications([n1, n2])
  

You can send other application specific information as well.

  
    APNS.send_notification(device_token, :alert => 'Hello iPhone!', :badge => 1, :sound => 'default',
                                         :other => {:sent => 'with apns gem'})
  

This will add the other hash to the same level as the aps hash:

  
    {"aps":{"alert":"Hello iPhone!","badge":1,"sound":"default"},"sent":"with apns gem"}
  

After you setup push notification for your application with Apple. You need to ask Apple for you application specific device token.

ApplicationAppDelegate.m

  
    - (void)applicationDidFinishLaunching:(UIApplication *)application {    
        // Register with apple that this app will use push notification
        [[UIApplication sharedApplication] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeAlert | 
          UIRemoteNotificationTypeSound | UIRemoteNotificationTypeBadge)];	
    }

- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
// Show the device token obtained from apple to the log
NSLog("deviceToken: %", deviceToken);
}