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Apple Push Notification (APN) Python 2 script server support on iOS

I have configured an iOS app with Apple Push Notification (APN) service enabled. I was able to send notifications to devices with PHP and Python 3 scripts. I tested on both local server and local machine. But now I need to write a script in Python2.

Below is the script I wrote and when I run this I get nothing. Neither my device notification nor command line error.

import socket, ssl, json, struct
import binascii
import os

deviceToken = 'my_device_tocken_without_spaces' 

thePayLoad = {
     'aps': {
          'alert':'My first push notification!',
          'sound':'default'
          }
     }

theCertfile = 'ck3_2.pem'

theHost = ( 'gateway.sandbox.push.apple.com', 2195 )

data = json.dumps( thePayLoad )

theFormat = '!BH32sH%ds' % len(data)

theNotification = struct.pack( theFormat, 0, 32, deviceToken, len(data), data )

ssl_sock = ssl.wrap_socket( socket.socket( socket.AF_INET, socket.SOCK_STREAM ), certfile = theCertfile )

ssl_sock.connect( theHost )

ssl_sock.write( theNotification )

ssl_sock.close()

What did I miss? How can I check where the error occurred?

I ran a PHP script on localhost using XAMPP and I ran a Python script on the command line because I was unable to set up Python with XAMPP which has already posted the question here .

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3 answers


you can consider https://github.com/djacobs/PyAPNs , which includes many useful features, including:



  • error processing
  • support extended message format and automatically forward messages that are sent before error response
  • non-blocking ssl socket connection with excellent performance
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I think there is nothing wrong with your code. You can try adding the following lines afterssl_sock.connect( theHost ) 

print repr(ssl_sock.getpeername())
print ssl_sock.cipher()
print pprint.pformat(ssl_sock.getpeercert())


The ssl information of your connection will be printed.

Alternatively, you can create a sample server and change the connections in your client and test it on the server. http://carlo-hamalainen.net/blog/2013/1/24/python-ssl-socket-echo-test-with-self-signed-certificate

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You imported binascii, but you forgot to use it. Convert token and json data to byte arrays like:

deviceToken = binascii.a2b_hex('my_device_tocken_without_spaces')

and

data = json.dumps(thePayLoad, separators=(',', ':'), ensure_ascii=False).encode('utf-8')
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