Module: APN::Feedback

Defined in:
lib/apn_on_rails/libs/feedback.rb

Overview

Module for talking to the Apple Feedback Service. The service is meant to let you know when a device is no longer registered to receive notifications for your application.

Class Method Summary collapse

Class Method Details

.devices(&block) ⇒ Object

Returns an Array of APN::Device objects that has received feedback from Apple. Each APN::Device will have it’s feedback_at accessor marked with the time that Apple believes the device de-registered itself.



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# File 'lib/apn_on_rails/libs/feedback.rb', line 13

def devices(&block)
  devices = []
  APN::Connection.open_for_feedback do |conn, sock|
    while line = sock.gets   # Read lines from the socket
      line.strip!
      feedback = line.unpack('N1n1H140')
      token = feedback[2].scan(/.{0,8}/).join(' ').strip
      device = APN::Device.find(:first, :conditions => {:token => token})
      if device
        device.feedback_at = Time.at(feedback[0])
        devices << device
      end
    end
  end
  devices.each(&block) if block_given?
  return devices
end

.process_devices ⇒ Object

Retrieves a list of APN::Device instnces from Apple using the devices method. It then checks to see if the last_registered_at date of each APN::Device is before the date that Apple says the device is no longer accepting notifications then the device is deleted. Otherwise it is assumed that the application has been re-installed and is available for notifications.

This can be run from the following Rake task:

$ rake apn:feedback:process



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# File 'lib/apn_on_rails/libs/feedback.rb', line 41

def process_devices
  APN::Feedback.devices.each do |device|
    if device.last_registered_at < device.feedback_at
      device.destroy
    end
  end
end