Push not being recieved by devices anymore

Hi there,

We are using this plugin on Google App Engine with a Cloud Endpoints project.

Several months back when we were testing the integration the push messages were sending.

We have not made any major modifications to our push code and now the messages are not sending.

The App Engine logs show:

GatewayConnection APNS connection establishing...
GatewayConnection APNS connection established
GatewayConnection APNS connection closed

and does not report any 500 errors or SSL/key errors. But the message is not received by the phone.

We are also getting “Deadline Exceeded Errors” at least one of the times we tried.

Our keys are signed correctly using this process:

in keychain access, select both cert and key then export to Certificates.p12 file.

to generate cert.pem openssl pkcs12 -in Certificates.p12 -out cert.pem -nodes -nokeys

to generate key.pem openssl pkcs12 -in Certificates.p12 -out key.pem -nodes -nocerts

Our push code is copied directly from the instructions:

def send_single_push(u, payload):

    apns = get_apns_handler(False)

    # Send multiple notifications in a single transmission
    frame = Frame()
    identifier = 1
    expiry = time.time()+3600
    priority = 10

    pa = PushAlias.query(PushAlias.user == u.key).fetch(1)

    if pa:
        pa = pa[0]

    bc = PushBadgeCount.query(PushBadgeCount.alias == pa.key).fetch(1)

    if bc:
        bc = bc[0]

    # Increase the badge count
    bc.badge_count += 1
    bc.put()

    # Set the payload data and badge count
    apns_payload = Payload(
        alert=payload['alert'],
        sound=payload['sound'] if payload.has_key('sound') and payload['sound'] else "default",
        badge=bc.badge_count
    )

    # Add a push to the frame for each device in the alias
    for device in pa.devices:
        frame.add_item(device, apns_payload, identifier, expiry, priority)

    if get_environment() != 'sandbox':
        try:
            apns.gateway_server.send_notification_multiple(frame)
        except:
            # Force re-connect
            apns.gateway_server._connect()

        return False, None

We are mimicking Urban Airship like functionality.

And the keys are set as such:

def get_apns_handler(enhanced=False):

    sandbox = True
    cert = APNS_CERT_SANDBOX
    pem = APNS_PEM_SANDBOX

    # if get_environment() == 'prod':
    #     sandbox = False
    #     cert = APNS_CERT_PRODUCTION
    #     pem = APNS_PEM_PRODUCTION

    return APNs(use_sandbox=sandbox, cert_file=cert, key_file=pem, enhanced=enhanced)

We are using Googles own SSL library via the app.yaml:

libraries:
    - name: ssl
      version: latest

Any help would be greatly appreciated. Let me know if you need more information.

[gregorskii]

Resolved by using enhanced=True

[gregorskii]

I changed enhanced mode to True and the pushes started sending. Can anyone explain why enhanced False and enhanced True would cause this to happen?