iOS push messages from Google App Engine, using PyAPNS (https://github.com/djacobs/PyAPNs)

Google App Engine APNS

from apns import APNs, Payload

APNS_CLIENT = APNs(cert_file="cert.pem")

def push_to_ios_batch(message, devices, user_id):
    payload = Payload(alert=message, badge=1)
    for device_push_id in [d['device_push_id'] for d in devices]:
        push_succeeded = False
        while not push_succeeded:
            try:
                APNS_CLIENT.gateway_server.send_notification(device_push_id, payload)
                push_succeeded = True
            except:
                # Force re-connect
                APNS_CLIENT.gateway_server._connect()