Add timestamp field for Unregistered exception

Fix #61

apns2/client.py

@@ -54,6 +54,10 @@ class APNsClient(object):
         stream_id = self.send_notification_async(token_hex, notification, topic, priority, expiration, collapse_id)
         result = self.get_notification_result(stream_id)
         if result != 'Success':
+            if isinstance(result, tuple):
+                reason, info = result
+                raise exception_class_for_reason(reason)(info)
+            else:
                 raise exception_class_for_reason(result)
 
     def send_notification_async(self, token_hex, notification, topic=None, priority=NotificationPriority.Immediate,
@@ -83,12 +87,19 @@ class APNsClient(object):
         return stream_id
 
     def get_notification_result(self, stream_id):
+        """
+        Get result for specified stream
+        The function returns: 'Success' or 'failure reason' or ('Unregistered', timestamp)
+        """
         with self._connection.get_response(stream_id) as response:
             if response.status == 200:
                 return 'Success'
             else:
                 raw_data = response.read().decode('utf-8')
                 data = json.loads(raw_data)
+                if response.status == 410:
+                    return data['reason'], data['timestamp']
+                else:
                     return data['reason']
 
     def send_notification_batch(self, notifications, topic=None, priority=NotificationPriority.Immediate,

apns2/errors.py

@@ -128,6 +128,11 @@ class MethodNotAllowed(InternalException):
 class Unregistered(APNsException):
     """The device token is inactive for the specified topic."""
 
+    def __init__(self, timestamp=None):
+        super().__init__()
+
+        self.timestamp = timestamp
+
 
 class PayloadTooLarge(BadPayloadException):
     """The message payload was too large. The maximum payload size is 4096 bytes."""