查询APNs反馈服务器的PHP技术 [英] PHP technique to query the APNs Feedback Server

问题描述

有人可以澄清APN(Apple推送通知)在查询方式方面的要求吗?

Can someone clarify what the APNs (Apple Push Notification) wants as far as how you query it?

文档说，一旦建立连接，它就会开始发送.这是否意味着我不对它执行fread()?

The docs say it starts sending as soon as the connection is made. Does this mean that I don't do an fread() on it?

这是我当前的代码，请尝试阅读它.我没有将fread()放入循环中，因为我不知道哪个响应表明没有更多的记录可读取"，并且我不希望服务器上出现无限循环.

Here's my current code to try and read it. I did NOT put the fread() in a loop as I do not know what response indicates "no more records to read" and I didn't want an infinite loop on my server.

<?php
$apnsCert = 'HOHRO-prod.pem';

$streamContext = stream_context_create();
stream_context_set_option($streamContext, 'ssl', 'local_cert', $apnsCert);
stream_context_set_option($streamContext, 'ssl', 'verify_peer', false);

$apns = stream_socket_client('ssl://feedback.push.apple.com:2196', $error, $errorString, 60, STREAM_CLIENT_CONNECT, $streamContext);

echo 'error=' . $error;
echo 'errorString=' . $errorString;


$result = fread($apns, 38);
echo 'result=' . $result;


fclose($apns);
?>

到目前为止，我得到的只是一个空答复.没有错误，因此正在连接.

So far all I am getting is a null reply. There are no errors so it is connecting.

我不知道null答复是否意味着没有数据，或者我的fread()是错误的处理方式.

I don't know if the null reply means no data is there, or my fread() is the wrong way to do it.

谢谢

推荐答案

这是一个很大的陷阱，当我第一次尝试连接时，这使我感到困惑:APNS反馈服务器仅返回自上次以来过期"的设备令牌.反馈请求.这意味着大多数情况下，除非您已经与大量应用程序用户打交道，否则您将得到NULL响应.

Here's a big gotcha which confused me when I first tried connecting: the APNS feedback servers only return the device tokens that have "expired" since your last feedback request. Which means most of the time you'll get a NULL response unless you're already dealing with a high volume of users of your app.

因此，请确保将过期的设备令牌存储到磁盘或数据库中，因为在反馈查询之后，它们将永久消失.至少可以说这使测试很痛苦！

So make sure you store the expired device tokens to disk or db, because after your feedback query they're gone for good. This makes testing a pain to say the least!

这是一个完整的功能，可以从APNS反馈服务器中获取设备令牌(非常感谢上述帮助我将它们整合在一起的答案):

Here's a complete function to fetch the device tokens from the APNS feedback servers (many thanks to the answers above for helping me put it all together):

function send_feedback_request() {
    //connect to the APNS feedback servers
    //make sure you're using the right dev/production server & cert combo!
    $stream_context = stream_context_create();
    stream_context_set_option($stream_context, 'ssl', 'local_cert', '/path/to/my/cert.pem');
    $apns = stream_socket_client('ssl://feedback.push.apple.com:2196', $errcode, $errstr, 60, STREAM_CLIENT_CONNECT, $stream_context);
    if(!$apns) {
        echo "ERROR $errcode: $errstr\n";
        return;
    }


    $feedback_tokens = array();
    //and read the data on the connection:
    while(!feof($apns)) {
        $data = fread($apns, 38);
        if(strlen($data)) {
            $feedback_tokens[] = unpack("N1timestamp/n1length/H*devtoken", $data);
        }
    }
    fclose($apns);
    return $feedback_tokens;
}

如果一切正常，则此函数的返回值将类似于(通过print_r()):

If all is well, the return values from this function will look something like this (via print_r()):

Array
(
    Array
    (
        [timestamp] => 1266604759
        [length] => 32
        [devtoken] => abc1234..............etcetc
    ),
    Array
    (
        [timestamp] => 1266604922
        [length] => 32
        [devtoken] => def56789..............etcetc
    ),
)

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