该模块基于 webman/push，用于快速实现推送。
修改 push 模块根目录 push.php文件 APP-KEY 和 APP-SECRET，也可以在其他模块根目录添加 push.php 文件。

<?php
return [
    '[APP-KEY]' => [
        'enable' => true,
        'channel_hook' => 'http://127.0.0.1:8787/push/hook/[APP-KEY]',
        'app_secret' => '[APP-SECRET]'
    ]
];

客户端订阅：

<script src="/modules/push/js/push.js"></script>
<script>
var app_key = [APP-KEY];
var connection = new Push({
    url: 'wss://www.yoursite.com',
    app_key: app_key,
    auth: '/push/auth/' + app_key
});
var private_channel = connection.subscribe('private-MESSAGECENTER-' + [ID]);
private_channel.on('message', function(data) {
    // do something
});
var public_channel = connection.subscribe('MESSAGECENTER');
public_channel.on('message', function(data) {
    // do something
});
</script>

私有频道鉴权：

// 实现PushAuth事件
public function onPushAuth($payload)
{
    list($channel_name, $pusher) = $payload->params;
    if (get_user()->isLogin() && $channel_name == 'private-MESSAGECENTER-' . get_user()->uid) $payload->result = true;
}

channel_hook:

// 实现PushChannelHook事件
public function onPushChannelHook($payload)
{
    var_dump($payload);
}

服务端推送

$pusher = ev('Pusher', [APP-KEY]);
$channel = 'private-MESSAGECENTER-' . $id;
$pusher->trigger($channel, 'message', [
    'from' => $from,
    'message' => $message
]);