APNS推送通知的流程

下面是我的所有部署配置过程。

1. 将app注册notification里面, 并从APNS上获取测试机的deviceToken.

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {            [[UIApplication sharedApplication] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound)];          // other codes here.        return YES;}- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {    NSLog(@"deviceToken: %@", deviceToken);}- (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error {    NSLog(@"Error in registration. Error: %@", error);}- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo{        NSLog(@"收到推送消息 ： %@",[[userInfo objectForKey:@"aps"] objectForKey:@"alert"]);    if ([[userInfo objectForKey:@"aps"] objectForKey:@"alert"]!=NULL) {        UIAlertView* alert = [[UIAlertView alloc] initWithTitle:@"推送通知"                                                        message:[[userInfo objectForKey:@"aps"] objectForKey:@"alert"]                                                       delegate:self                                              cancelButtonTitle:@"关闭"                                              otherButtonTitles:@"更新状态",nil];        [alert show];        [alert release];    }}

启动程序，将app注册到通知项后，在console里面找到打印的deviceToken：

deviceToken: <6974ac11 870e09fa 00e2238e 8cfafc7d 2052e342 182f5b57 fabca445 42b72e1b>

2. 生成app在服务端需要的许可证
1）进入Provisioning Portal, 下载Certificates在development下的证书。 
2） 找到需要测试的app id,然后enable它在development下的Apple Push Notification service: Development Push SSL Certificate。需要输入1）中的签名证书才可以生成一个aps_developer_identity.cer.
3) 双击aps_developer_identity.cer，会打开系统的key chain. 在My certificates下找到Apple Development Push Services。需要为certificate和它之下的private key各自export出一个.p12文件。(会出现设置密码过程)
4）需要将上面的2个.p12文件转成.pem格式：

openssl pkcs12 -clcerts -nokeys -out cert.pem -in cert.p12

openssl pkcs12 -nocerts -out key.pem -in key.p12

5）如果需要对key不进行加密：

openssl rsa -in key.pem -out key.unencrypted.pem

6）然后就可以合并两个.pem文件, 这个ck.pem就是服务端需要的证书了。

cat cert.pem key.unencrypted.pem > ck.pem

3.服务端push通知到ANPS. 在cocoachina找到了两种方法:
  1）php驱动。需要将ck.pem和php脚本放到server上。全部的php代码是：

<?php$deviceToken = '6974ac11 870e09fa 00e2238e 8cfafc7d 2052e342 182f5b57 fabca445 42b72e1b';$pass = '123456';   // Passphrase for the private key (ck.pem file)// Get the parameters from http get or from command line$message = $_GET['message'] or $message = $argv[1] or $message = 'A test message from worldcup';$badge = (int)$_GET['badge'] or $badge = (int)$argv[2];$sound = $_GET['sound'] or $sound = $argv[3];// Construct the notification payload$body = array();$body['aps'] = array('alert' => $message);if ($badge)  $body['aps']['badge'] = $badge;if ($sound)  $body['aps']['sound'] = $sound;/* End of Configurable Items */$ctx = stream_context_create();stream_context_set_option($ctx, 'ssl', 'local_cert', 'ck.pem');  // assume the private key passphase was removed.stream_context_set_option($ctx, 'ssl', 'passphrase', $pass);// connect to apns$fp = stream_socket_client('ssl://gateway.sandbox.push.apple.com:2195', $err, $errstr, 60, STREAM_CLIENT_CONNECT, $ctx);if (!$fp) {    print "Failed to connect $err $errstr\n";    return;}else {   print "Connection OK\n<br/>";}// send message$payload = json_encode($body);$msg = chr(0) . pack("n",32) . pack('H*', str_replace(' ', '', $deviceToken)) . pack("n",strlen($payload)) . $payload;print "Sending message :" . $payload . "\n";  fwrite($fp, $msg);fclose($fp);?>

请求一次 http://127.0.0.1/apns/apns.php?message=A%20test%20message%20from%20localhost&badge=2&sound=received5.caf就会向APNS进行一次推送。我的请求结果如下：

Connection OKSending message :{"aps":{"alert":"A test message from localhost","badge":2,"sound":"received5.caf"}}

 2）pushMeBaby驱动。将aps_developer_identity.cer导入到project里面，改名为apns.cer。
启动app即可看到push窗口。pushMeBaby和具体的配置的过程也基本是参考这个帖子的，非常感谢cocoachina会员的奉献精神。