前段时间开发的一套APNS推送平台效率很差，通过再次深入研究苹果的消息推送服务，总结了不少经验。同时也参考了网上一些技术blog的博文，重新完善了此前写过的一个PHP类，代码如下：
<?php
/**
* ApplePush 苹果消息推送公共类
* @author www.sunbloger.com
*/
class ApplePush
{
const STATUS_CODE_INTERNAL_ERROR = 999;
const ERROR_RESPONSE_SIZE = 6;
const ERROR_RESPONSE_COMMAND = 8;
protected $_errorResponseMessages = array(
0 => 'No errors encountered',
1 => 'Processing error',
2 => 'Missing device token',
3 => 'Missing topic',
4 => 'Missing payload',
5 => 'Invalid token size',
6 => 'Invalid topic size',
7 => 'Invalid payload size',
8 => 'Invalid token',
self::STATUS_CODE_INTERNAL_ERROR => 'Internal error'
);
/**
* APNS server url
*
* @var string
*/
protected $apns_url = 'ssl://gateway.push.apple.com:2195'; //沙盒地址：ssl://gateway.sandbox.push.apple.com:2195
/**
* 推送数据
*
* @var string
*/
private $payload_json;
/**
* 数据流对象
*
* @var mixed
*/
private $fp;
/**
* 设置APNS地址
*
* @param string $url
*/
public function setApnsUrl($url)
{
if (empty($url)) {
return false;
} else {
$this->apns_url = $url;
}
return true;
}
/**
* 设置推送的消息
*
* @param string $body
*/
public function setBody($body)
{
if (empty($body)) {
return false;
} else {
$this->payload_json = json_encode($body);
}
return true;
}
/**
* Open 打开APNS服务器连接
*
* @param string $pem 证书
* @param string $passphrase 证书密钥
*/
public function open($pem, $passphrase)
{
if (empty($pem)) {
return false;
}
if (empty($passphrase)) {
return false;
}
$ctx = stream_context_create();
stream_context_set_option($ctx, 'ssl', 'local_cert', $pem);
stream_context_set_option($ctx, 'ssl', 'passphrase', $passphrase);
$fp = stream_socket_client($this->apns_url, $err, $errstr, 60, STREAM_CLIENT_CONNECT, $ctx);
if (!$fp) {
return false;
}
$this->fp = $fp;
return true;
}
/**
* Send 推送
*
* @param string $token
*/
public function send($token, $id)
{
$msg = pack('CNNnH*', 1, $id, 864000, 32, $token) . pack('n', strlen($this->payload_json)) . $this->payload_json;
// Send it to the server
$result = fwrite($this->fp, $msg, strlen($msg));
return $result;
}
public function readErrMsg()
{
$errInfo = @fread($this->fp, self::ERROR_RESPONSE_SIZE);
if ($errInfo === false || strlen($errInfo) != self::ERROR_RESPONSE_SIZE) {
return true;
}
$errInfo = $this->parseErrMsg($errInfo);
if (!is_array($errInfo) || empty($errInfo)) {
return true;
}
if (!isset($errInfo['command'], $errInfo['statusCode'], $errInfo['identifier'])) {
return true;
}
if ($errInfo['command'] != self::ERROR_RESPONSE_COMMAND) {
return true;
}
$errInfo['timeline'] = time();
$errInfo['statusMessage'] = 'None (unknown)';
$errInfo['errorIdentifier'] = $errInfo['identifier'];
if (isset($this->_aErrorResponseMessages[$errInfo['statusCode']])) {
$errInfo['statusMessage'] = $this->_errorResponseMessages[$errInfo['statusCode']];
}
return $errInfo;
}
protected function parseErrMsg($errorMessage)
{
return unpack('Ccommand/CstatusCode/Nidentifier', $errorMessage);
}
/**
* Close APNS server 关闭APNS服务器连接
*
*/
public function close()
{
// Close the connection to the server
fclose($this->fp);
return true;
}
}
?>
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