## API for communicating through GCM

This is an API for communicating through GCM with Android powered devices. I developed a way of building the messages, sending them and handling the result.
To build the messages, I developed a data type: GCMmessage, where you can customize some parameters for the servers providing the GCM service.
To send the messages you need to establish some server configurations through the data type GCMHttpConfig (as the correct Api key provided by Google). Passing this configuration, a GCMmessage and a number of retries as arguments to the function sendGCM, the notifications will be sent to the GCM Servers.
The result is shown in a new data type: GCMresult, which provides some useful information, as selecting the devices that have changed their regIds, or have been unregistered, and so on. The programmer can take his own desitions on how to handle this result in his server.

To show a simple usage of this API for GCM (Network.PushNotify.Gcm) there is a simple test example, available on: [1](https://github.com/MarcosPividori/GSoC-Communicating-with-mobile-devices/tree/master/push-notify/test)

Also there is an Android app and Yesod example available on: [2](https://github.com/MarcosPividori/GSoC-Communicating-with-mobile-devices/tree/master/test)