Ruby Apple Push Notification Example

apns.rb

require 'openssl'
require 'socket'
require 'rubygems'
require 'json'

# Takes json as an input and sends data to APNS over SSL

APNS_HOST = 'gateway.sandbox.push.apple.com'
APNS_PORT = 2195
APNS_CERT_FILE_PATH = 'MyCert.pem'
APNS_CERT = File.read(APNS_CERT_FILE_PATH) if File.exists?(APNS_CERT_FILE_PATH)
DEVICE_TOKEN = "12345abc 12345abc 12345abc 12345abc 12345abc 12345abc 12345abc 12345abc"

# Create the SSL connection
def create_socket
  context = OpenSSL::SSL::SSLContext.new
  context.key = OpenSSL::PKey::RSA.new(APNS_CERT,'')
  context.cert = OpenSSL::X509::Certificate.new(APNS_CERT)
  
  socket = TCPSocket.new(APNS_HOST, APNS_PORT)
  ssl = OpenSSL::SSL::SSLSocket.new(socket,context)
  ssl.connect
  
  return socket, ssl
end

# Send the actual notification which is some json data
def send_notification(socket, ssl, payload)
  token = [DEVICE_TOKEN.delete(' ')].pack('H*')
  msg = "\0\0 #{token}\0#{payload.length.chr}#{payload}"
  begin
    ssl.write(msg)
    ssl.flush
    puts "Sending payload: #{payload}"
  rescue
    puts "Socket error occurred, retrying connection"
  end
end

socket, ssl = create_socket

# Get json data from input
payload = {"aps" => {"alert" => ARGV[0]}, "ord" => {"shp" => ARGV[1], "section" => ARGV[2], "row" => ARGV[3]}}
json = payload.to_json()

send_notification(socket, ssl, json)

ssl.close
socket.close