Push Notifications Tutorial: Getting Started

vdiprenda · November 18, 2016, 5:25pm

Hi Jack,

This was a great tutorial, and what I use for my reference in building and testing APNS. I also created some java server code to push and a nice web service in the app to upload the device token back to my server.

Unfortunately, so much has changed with IOS 10. The new API is great. Will you by any chance, be upgrading the tutorial in the near future? I also noticed that “IOS 10 By Tutorials” references this tutorial. For me, it was a good way to learn the infrastructure and API’s. A lot of the IOS 10 info is fragmented.

Thanks
Vinnie

ludo · November 23, 2016, 2:20pm

I’ve implemented the recommendations above, but it seems it doesn’t work since IOS10 release.
There’s a new feature called “APNs authentication tokens” which requires to generate a certificate dedicated for this…and use the HTTP/2 protocol.
Can someone really ensure the “old” way as described above still works for IOS 10 device (I’m testing it on iPhone7 and IOS10) ?
I’ve tested the following command line: openssl s_client -CAfile entrust_2048_ca.cer -connect gateway.sandbox.push.apple.com:2195 -cert mobileappdev.pem -key mobileappde
v.pem.
It gives the following answer: Verify return code: 0 (ok)
Even if in the middle of the test the following appears.
17576:error:14094438:SSL routines:SSL3_READ_BYTES:tlsv1 alert internal error:.\ssl\s3_pkt.c:1300:SSL alert number 80
17576:error:140790E5:SSL routines:SSL23_WRITE:ssl handshake failure:.\ssl\s23_lib.c:177:

When I execute “newspush.php” I get the following error:
PHP Warning: stream_socket_client(): SSL operation failed with code 1. OpenSSL Error messages:
error: 14094438:SSL routines:SSL3_READ_BYTES:tlsv1 alert internal error in /usr/local/newspush.php on line 32
PHP Warning: stream_socket_client(): Failed to enable crypto in /usr/local/newspush.php on line 32
PHP Warning: stream_socket_client(): unable to connect to ssl://gateway.sandbox.push.apple.com:2195 (Unknown error) in /usr/local/newspush.php on line 32
Failed to connect: 0

Thanks for your precious help !

Ludo

ludo · November 29, 2016, 6:05pm

Reply to myself: I finally discovered I’ve selected the wrong certificate
So, everything works.

pvsingy · December 1, 2016, 10:58pm

Hi all, I’m hoping some one can help me with this.

we have notifications as part of our app and store the device token once the user registers an account and log in.
we are currently only keeping the latest device token for a specific log in account.Hence if another user in the company uses the same account (this happens) to log in, the previous user doesn’t receive any notifications when he/she logs in.
what’s the right way to handle these device tokens to make sure that all users logged in to an account, irrespective of device, get a notification.
If we don’t delete the device token, is there a risk of getting duplicate notifications, when the user installs another version of the app later on?

Appreciate inputs!
PV

hennequin · December 9, 2016, 1:10pm

Hi all,

I have this weird issue with my parking provider in my hometown.

It’s membership allows you to register a parking action in the streets by entering the code of the parking area. You can do that with their smartphone app. You can get (push)notifications (e.g. every hour) that you are still registered, so you won’t forget to sign off when you leave again.

My wife has also the app and uses a different car.

We login the app by using each our unique telephone number.

However, when I register a parking action with te app on my phone, the notifications are sent to my wife’s phone.

In the past we used both one account, but the parking provider changed this by allowing multiple users and multiple cars on the same account.

I addressed this issue to my parking provider does not seem capable of solving this.

Where could this go wrong in the notification chain?

Kind regards, DerRudy

trevisthomas · December 23, 2016, 5:21pm

FYI for anyone working with this tutorial trying to use “content-available” the code above doesn’t work properly, at least for me, using Swift 3 and Xcode 8.1. The conversion from string to number fails. I just replaced this:

if (aps[“content-available”] as? NSString)?.integerValue == 1 {

with this:

if aps[“content-available”] as? NSNumber == 1 {

to get it to work.

chepiok · January 9, 2017, 11:18pm

I’ve fixed the same error by puting my .pem file renamed in ck.pem next to the PHP script.

woggledog · January 10, 2017, 2:49pm

Got this working on my first attempt (as a non developer, that in itself is an achievement).

Couple of things:

 {
  "aps":
  {
    "alert": "Breaking News!",
    "sound": "default"
    "link_url" : "https://raywenderlich.com,
  }
}

Appears to have a , instead of a "

Secondly, my iOS 10 device, whilst working with simpler notifications such as

{"aps":{"alert":"Hello from APNs Tester.","badge":"1"}}

or

{"aps" : {
"alert" : {
 "title" : "Introduction to Notifications",
 "subtitle" : "Session 707",
 "body" : "Woah! These new notifications look amazing! Don’t you agree?"
 },
 "badge" : 1 },
 }

doesn’t appear to work with anything more exotic. Custom buttons, for example, and the above quoted URL example. Ideas? I’m using APN Tester to push

ritud · January 31, 2017, 6:03am

I am getting error-

Warning: stream_socket_client(): Failed to enable crypto in /Users/Desktop/contentpush.php on line 24

Warning: stream_socket_client(): unable to connect to ssl://gateway.push.apple.com:2195 (Unknown error) in /Users/Desktop/contentpush.php on line 24
Failed to connect: 0

on mac serra, production environment.

I changed $ctx = stream_context_create();
with
$ctx = stream_context_create([
‘ssl’ => [
‘verify_peer’ => false,
‘verify_peer_name’ => false
]
]);
as someone did comment.
But getting same error.

tanishgupta16 · February 15, 2017, 5:46am

Hey thanks for the amazing tutorial. I’m facing one issue though. If the app is killed and then a notification arrives with actions, if :

I click on notification it will open the app using launchoptions.
But if I select an action it is killing the app.

Please help on the 2nd point.

singhz · February 22, 2017, 10:43am

i had been receiving success message on push notification for apn but i am unable to get notification on phone can somebody help me for this . using laravel for push notification

zulkar · February 24, 2017, 4:49am

Best and simple to use.

yagnik_suthar · March 10, 2017, 5:26am

Hey Jack thank you for this tutorial
I Want add more in that that I want to store this notification and show in Tableview so how can I do that please give me a demo code for that so I can understand easily …

dpalme · April 13, 2017, 5:30pm

Needs to be updated to swift 3.0.

sjkummer · May 5, 2017, 7:09am

This tutorial is far from beeing complete. There have been more complete Tutorials on raywenderlin - you can search them but not open them, because the URLs are automatically redirected to this article. Please give us back the earlier tutorials. A hint, that a more up-to-date article is available would be absolutely sufficient; a hard redirect is unsatisfactory.

tp001 · May 6, 2017, 4:16pm

Thanks, If anyone has a problem about converting your certificate to p12 select certificate on your left panel then you can see the paired key then right click and export to p12

balaios · June 3, 2017, 5:59am

Me too facing the same issue. Anyone could tell what will be the issue ?