Inconsistency in receiving push notification

问题:

I found some weird behavior in push notification. My iPod app receives push notifications till last week with no issues. Then I found that my app is not receiving push notifications, and I changed the certificates and it worked fine, and after 2 days its not working. And I repeated the same process and same kinda problem. I was wondering why this happens?

NOTE I am using my own java based server to send push notification. I am sure that my certification are not expired. At the time of this problem the badge id is also not visible with my application icon.??

Thanks in advance.

回答1:

Ensure a few things

1. You are using the correct combination of production or dev pem and the APNS or sandbox server URL
2. Check the Feedback services to ensure whether you are getting any errors

I faced similar issues with my 3GS running OS 4.1 last week. It started working after I restarted my device. Try doing that and see if it works.

回答2:

Please make sure to update the device token in the database of you provider. I guess some updates in your iOS/certificates may changed your device token. Just make a test around that.

回答3:

Try lostInTransit's solution and also check for your internet connectivity. I also faced this issue with my iPod sometimes the push notifications not come in my iPod. Try this -

Install facebook iPhone app on your device. Send a test push notification from your server. If the notification does not come then do something with facebook which should generate the notification. If the notification from facebook does not come it means its related to your net connectivity.And your code is perfect.

Sometimes I see that when my iPod is on DHCP it does not receive the notification but when I assign it a static network (dedicated IP) it works fine.