Python3 Apple Push Notification HTTP/2 Example - Silent Push

apns.py

"""
Use HTTP/2 send APNS Example main reference
===========================================
http://gobiko.com/blog/token-based-authentication-http2-example-apns/

Error 410 to detect uninstalls
==============================
https://leftshift.io/mobile-tracking-uninstalls-on-ios-and-android
https://developer.apple.com/library/content/documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/CommunicatingwithAPNs.html#//apple_ref/doc/uid/TP40008194-CH11-SW1

Expected result from below code:
410
{"reason":"Unregistered","timestamp":1496371306210}

HTTP/2 push
===========
https://tpu.thinkpower.com.tw/tpu/File/html/201611/20161122001842_f.html?f=3dj6j8kd38895ksgtdddd93865jhr9sn3rqkh
"""

import json
import jwt
import time

from hyper import HTTPConnection, HTTP20Connection

ALGORITHM = 'ES256'

APNS_KEY_ID = 'YOUR_KEY'

# http://disq.us/p/1ecxfqv: 
# CMD: fold -w 64 APNsAuthKey_my_id.p8 > certs/APNsAuthKey_my_id_fold.p8
APNS_AUTH_KEY = 'Your .p8 cert path'

TEAM_ID = 'your_team_id'
BUNDLE_ID = 'your_bundle_id'

PUSH_ID = 'some_push_id'

f = open(APNS_AUTH_KEY)
secret = f.read()

def get_token() -> str:
    token = jwt.encode(
        {
            'iss': TEAM_ID,
            'iat': time.time()
        },
        secret,
        algorithm= ALGORITHM,
        headers={
            'alg': ALGORITHM,
            'kid': APNS_KEY_ID
        }
    )

    return token


def send_single_push(apns_token: str, payload_data: dict):

    token = get_token()
    path = '/3/device/{0}'.format(apns_token)

    request_headers = {
        'apns-expiration': '0',
        'apns-priority': '10',
        'apns-topic': BUNDLE_ID,
        'authorization': 'bearer {0}'.format(token.decode('ascii'))
    }
    # Open a connection the APNS server

    # https://github.com/genesluder/python-apns/pull/3
    # https://github.com/genesluder/python-apns/pull/3/commits/0f543b773c25b1a1d817f5f681912ed3c9c2ca35

    # Development
    # conn = HTTP20Connection('api.development.push.apple.com:443', force_proto='h2')

    # Production
    conn = HTTP20Connection('api.push.apple.com:443', force_proto='h2')

    payload = json.dumps(payload_data).encode('utf-8')


    # Send our request
    conn.request(
        'POST',
        path,
        payload,
        headers=request_headers
    )
    # https://github.com/genesluder/python-apns/pull/3
    # http://www.ehowstuff.com/how-to-install-and-update-openssl-on-centos-6-centos-7/
    resp = conn.get_response()

    return resp

payload_data = {
        'aps': {
            'alert' : 'All your base are belong to us.',
            # This is silent push
            'sound' : '',	
            # Key to silent push
            'content-available': 1	
        }
    }

resp = send_single_push(APNS_DEVICE_TOKEN, payload_data)
print('Status: {}'.format(resp.status))
print('reps.read(): {}'.format(resp.read()))

# If we are sending multiple requests, use the same connection
payload_2_data = {
    'aps': {
        'alert' : 'You have no chance to survive. Make your time.',
        'sound' : '',
        'content-available': 1
    }
}

resp = send_single_push(APNS_DEVICE_TOKEN, payload_2_data)
print('Status: {}'.format(resp.status))
print('reps.read(): {}'.format(resp.read()))

Hi Everyone I'm Using this package to send MDM push notification

`
from apns2.client import APNsClient, NotificationType
from apns2.payload import Payload
def PingDevice(cls, devicetoken, pushmagic):
# Send request to Apple
print('Send request to Apple')
topic = "com.apple.mgmt.External.ff2ea8ba-350c-4e1d-9a0d-cf8f62c06086"

    # Path to your VoIP certificate
    cert_path = os.path.join(settings.BASE_DIR, 'sign', "PushCert.pem")

    # Initialize the client
    client = APNsClient(cert_path, use_sandbox=False, use_alternative_port=False)

    # Prepare the payload
    payload = Payload(custom={"mdm": pushmagic.decode('utf-8')})

    try:
        # Send the notification
        response = client.send_notification_async(token_hex=base64.b64decode(devicetoken).hex(), notification=payload, topic=topic,push_type=NotificationType.MDM)
        result = client.get_notification_result(response)

        print(f"Notification sent successfully: {result}")
        return True
    except Exception as e:
        print(f"Error sending notification: {e}")
        return False`
      notification was sent successfully but the device did not respond on my server URL please tell me why this happened.