SENDING NOTIFICATIONS THROUGH GOOGLE CLOUD MESSAGING TO IOS DEVICES

We know that service Google Cloud Messaging (GCM) is needed to ensure that your application always shows the actual data to the user. The scheme of service includes three components. Directly GCM server, your push server and device installed application. The algorithm works is simple: the device is registered in the GCM, gets RegistrationID - a token that is used in the future - saves it from itself locally and transmits the server. Then push server uses this registrationId to send messages to your application on the device.