ios - New APNS Provider API and PHP

Question

I started creating some code based upon this for sending push notifications from PHP.

However now that I have understood there is a new API which utilizes HTTP/2 and provides feedback in the response, I am trying to figure out what I need to do to get that feedback.

I haven't been able to find any tutorials or sample code to give me direction (I guess because it is so new).

Is it possible to use the stream_socket_client() method of connecting to APNS with the new provider API? How do I get the feedback? All I get back from fwrite($fp, $msg, strlen($msg)) right now is a number. For all intents and purposes, you can consider my code the same as the code from the SO question I based my code on

Thanks!

Answer 1

With the new HTTP/2 APNS provider API, you can use curl to send push notifications.

EDIT

Before proceeding (as noted by @Madox), openssl >= 1.0.2e of should be installed (from package preferably). Verify with the command

openssl version

a) Your version of PHP should be >= 5.5.24 so that the constant CURL_HTTP_VERSION_2_0 is defined.

b) Make sure that you have curl version 7.46+ installed in your system with

curl --version

c) Curl should have http/2 support enabled. In the output when typing the previous command, you should see a line like this one:

Features: IDN IPv6 Largefile NTLM NTLM_WB SSL libz TLS-SRP HTTP2 UnixSockets 

if HTTP2 doesn't show up, you can follow this excellent tutorial to install http/2 for curl https://serversforhackers.com/video/curl-with-http2-support

Verify that curl detected openssl >= 1.0.2e, doing curl --version should output something like this:

curl 7.47.1 (x86_64-pc-linux-gnu) libcurl/7.47.1 OpenSSL/1.0.2f zlib/1.2.8 libidn/1.28 nghttp2/1.8.0-DEV librtmp/2.3

e) Once you everything installed, you can test it in the command line:

curl -d '{"aps":{"alert":"hi","sound":"default"}}'  
--cert <your-certificate.pem>:<certificate-password>  
-H "apns-topic: <your-app-bundle-id>"  
--http2   
https://api.development.push.apple.com/3/device/<device-token>

f) Here is a sample code in PHP that I have successfully tried:

if(defined('CURL_HTTP_VERSION_2_0')){

    $device_token   = '...';
    $pem_file       = 'path to your pem file';
    $pem_secret     = 'your pem secret';
    $apns_topic     = 'your apns topic. Can be your app bundle ID';


    $sample_alert = '{"aps":{"alert":"hi","sound":"default"}}';
    $url = "https://api.development.push.apple.com/3/device/$device_token";

    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $sample_alert);
    curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_2_0);
    curl_setopt($ch, CURLOPT_HTTPHEADER, array("apns-topic: $apns_topic"));
    curl_setopt($ch, CURLOPT_SSLCERT, $pem_file);
    curl_setopt($ch, CURLOPT_SSLCERTPASSWD, $pem_secret);
    $response = curl_exec($ch);
    $httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);

    //On successful response you should get true in the response and a status code of 200
    //A list of responses and status codes is available at 
    //https://developer.apple.com/library/ios/documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/Chapters/TheNotificationPayload.html#//apple_ref/doc/uid/TP40008194-CH107-SW1

    var_dump($response);
    var_dump($httpcode);

}