Apple Push Notification Serviceを利用したiPhone クライアントと、Rubyによるサーバの作成。

1. How to build a server and a iPhone client
application using the Apple Push
Notification Service
2009/7/21 @ actindi
Shu MASUDA

2. 2
Apple Push Notification Service (APNs)
What is the Apple Push Notification Service?
‣ iPhone OS 3.0
‣ 3
• Alert
• Badge
• Sound
‣

3. 3
Client Implementation Overview
★ APNs
• UIApplication registerForRemoteNotificationTypes:
• UIApplication application:didRegisterForRemoteNotificationsWithDeviceToken:
Device Token
★ APNs
• UIApplicationDelegate application:didReceiveRemoteNotification:
• UIApplication Delegate applicationDidFinishLaunching:

4. 4
Client Implementation
• Xcode

5. 5
Server Implementation Overview
1. App ID
2.
3. Interface APNS
4. Ruby

6. 6
Generating App ID
Bundle
Identifier ”*”

7. 6
Generating App ID
Enable for Apple Push Notification service

8. 6
Generating App ID
Enable for Apple Push Notification service

9. 7
Generating Key
1. p12 pem
• openssl pkcs12 -clcerts -nokeys -out apns-dev-cert.pem -in
apns-dev-cert.p12
• openssl pkcs12 -nocerts -out apns-dev-key.pem -in apns-dev-
key.p12
2. 1.
• openssl rsa -in apns-dev-key.pem -out apns-dev-key-
noenc.pem
3.
• cat apns-dev-cert.pem apns-dev-key-noenc.pem > apns-dev.pem
4. OpenSSL
• openssl s_client -connect gateway.sandbox.push.apple.com:
2195 -prexit -state -cert apns-dev-cert.pem -key apns-dev-
key-noenc.pem

10. 8
Creating the Push Notification Interface
• Binary format of the push notification interface
• (payload) JSON
{
“aps”: {
“alert”: “You’ve got a mail!”,
“badge”: 1,
“sound”: “default”
}
}

11. 9
Implementation in Ruby
★ Ruby
• pack? unpack?? or ... ???
•

12. 10
Implementation in Ruby
#! /usr/bin/env ruby
# -*- encoding: utf-8 -*-
require 'socket'
require 'openssl'
socket = TCPSocket.new('gateway.sandbox.push.apple.com', 2195)
context = OpenSSL::SSL::SSLContext.new('SSLv3')
context.cert = OpenSSL::X509::Certificate.new(File.read('apns-dev.pem'))
context.key = OpenSSL::PKey::RSA.new(File.read('apns-dev-key-noenc.pem'))
ssl = OpenSSL::SSL::SSLSocket.new(socket, context)
ssl.connect
device_token = ['XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX']
payload = <<-EOS
{
"aps": {
"alert": "#{alert}",
"badge": 2,
“sound”: “default”
}
}
EOS
(message = []) << ['0'].pack('H') << [32].pack('n') << device_token.pack('H*') << [payload.size].pack('n') << payload
ssl.write(message.join(''))
ssl.close
socket.close

13. It’s time to Demo!

14. 12
★
• Miss Piggy
• Catherine Miss Piggy
• Mr. Kermit iPhone
★
Miss Piggy Cathy (Catherine)
Miss Piggy
Miss Piggy Cathy Kermit
Miss Piggy Kermit iPhone Push Notification

15. 13
References
• Apple Push Notification Service Programming Guide
http://developer.apple.com/iphone/library/documentation/NetworkingInternet/Conceptual/
RemoteNotificationsPG/Introduction/Introduction.html
• How to build an Apple Push Notification provider server (tutorial) « Boxed Ice Blog
http://blog.boxedice.com/2009/07/10/how-to-build-an-apple-push-notification-provider-
server-tutorial/
• Ruby - pack
http://www.ruby-lang.org/ja/man/html/
pack_A5C6A5F3A5D7A5ECA1BCA5C8CAB8BBFACEF3.html
• SSL - 2008-01-03 -
http://d.hatena.ne.jp/shinichiro_h/20080103#1199305204