Push notification from python to iPhone, how to debug? - iphone

Question

How do one debug the connection from a provider to Apple push notification server?
I'm using a library called PyAPNs (github repo) and have the code below:
from apns import APNs, Payload
print "start"
apns = APNs(use_sandbox=True, cert_file='apns-prod.pem', key_file='apns-prod.pem')
# Send a notification
token_hex = '*******'
payload = Payload(alert="Hello World!", sound="default", badge=1)
apns.gateway_server.send_notification(token_hex, payload)
# Get feedback messages
for (token_hex, fail_time) in apns.feedback_server.items():
print token_hex
print fail_time
print "end"
The application is registered to receive RemoteNotification an everything looks okey under notification settings in the iPhone. But not notifications shows up.
My questions here how can I debug this. When running the script I don't get any errors and the apns.feedback_server.items is empty. I've tried to print the buffer from the feedback serve, but nothing.
Is there a way to see what's happening in the SSL socket? Or get some response from apples servers?
..fredrik
EDIT
I solved the problem. The issues was with the token_hex. I used the identifier number from the xcode organizer and not the token generated when registering the application.

Answer 1

USE THIS CODE:
#!/usr/bin/python2.7
import socket
import ssl
import json
import struct
import argparse
APNS_HOST = ( 'gateway.sandbox.push.apple.com', 2195 )
class Payload:
PAYLOAD = '{"aps":{${MESSAGE}${BADGE}${SOUND}}}'
def __init__(self):
pass
def set_message(self, msg):
if msg is None:
self.PAYLOAD = self.PAYLOAD.replace('${MESSAGE}', '')
else:
self.PAYLOAD = self.PAYLOAD.replace('${MESSAGE}', '"alert":"%s",' % msg)
def set_badge(self, num):
if num is None:
self.PAYLOAD = self.PAYLOAD.replace('${BADGE}', '')
else:
self.PAYLOAD = self.PAYLOAD.replace('${BADGE}', '"badge":%s,' % num)
def set_sound(self, sound):
if sound is None:
self.PAYLOAD = self.PAYLOAD.replace('${SOUND}', '')
else:
self.PAYLOAD = self.PAYLOAD.replace('${SOUND}', '"sound":"%s",' % sound)
def toString(self):
return (self.PAYLOAD.replace('${MESSAGE}','').replace('${BADGE}','').replace('${SOUND}',''))
def connectAPNS(host, cert):
ssl_sock = ssl.wrap_socket( socket.socket( socket.AF_INET, socket.SOCK_STREAM ), certfile = cert )
ssl_sock.connect( APNS_HOST )
return ssl_sock
def sendNotification(sslSock, device, message, badge, sound):
payload = Payload()
payload.set_message(message)
payload.set_badge(badge)
payload.set_sound(sound)
payloadAsStr = payload.toString()
format = '!BH32sH%ds' % len(payloadAsStr)
binaryDeviceToken = device.replace(' ','').decode('hex')
binaryNotification = struct.pack( format, 0, 32, binaryDeviceToken, len(payloadAsStr), payloadAsStr )
print ("sending payload: ["+payloadAsStr+"] as binary to device: ["+device+"]")
sslSock.write(binaryNotification)
def printUsageAndExit():
print("msg2ios - Version 0.1\nmsg2IOS.py -d <device> -m <message> -s[plays sound] -b <badgeint> -c <certBundlePath>")
exit(1)
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument('-d', '--device')
parser.add_argument('-m', '--message')
parser.add_argument('-s', '--sound')
parser.add_argument('-b', '--badge')
parser.add_argument('-c', '--cert')
args = parser.parse_args()
if (args.device is None) or ((args.message is None) and (args.sound is None) and (args.badge is None)) or (args.cert is None):
printUsageAndExit()
sslSock = connectAPNS(APNS_HOST, args.cert)
sendNotification(sslSock, args.device, args.message, args.badge, args.sound)
sslSock.close()