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workerman常用组件-channel分佈式通訊組件-channelClient-unsubscribe

发布时间：2021-12-18 23:20:28编辑：雪饮阅读（）

 unsubscribe

(要求Workerman版本>=3.3.0)
void \Channel\Client::unsubscribe(string $event_name)

取消订阅某个事件，这个事件发生时将不会再触发on($event_name, $callback)注册的回调$callback

参数
$event_name
事件名称
返回值
void
那麽繼昨天7端通信的實例(http://www.gaojiupan.cn/manshenghuo/chengxurensheng/4594.html)，我們可以結合
昨天那個登錄服務，我們實現比如登錄服務連續登錄10個用戶以後就‘謊報’説是服務過載。然後服務過載后，這裏假定就停止服務，然後取消訂閲。這種場景的模擬實現如：
則登錄服務如：
<?php
use Workerman\Worker;
use Workerman\Connection\TcpConnection;
require_once __DIR__ . '/vendor/autoload.php';

$http_worker = new Worker('http://0.0.0.0:4237');
$http_worker->onWorkerStart = function($http_worker)
{
    //連接到channelServer 2206
    Channel\Client::connect('127.0.0.1', 2206);
};
$http_worker->onMessage = function(TcpConnection $connection, $data)
{
    $event_name = 'user_login';
    $event_data = array('uid'=>123, 'uname'=>'tom');
    //用戶登錄事件發佈
    Channel\Client::publish($event_name, $event_data );
    //返回給http請求端
    $connection->send("login success");
};

Worker::runAll();
然後連同昨天這些所必須的服務都啓動
[root@localhost www.fpm.com]# /usr/local/php734/bin/php -c /usr/local/php734/lib/php/php.ini channelServer.php start -d
Workerman[channelServer.php] start in DAEMON mode
------------------------------------------ WORKERMAN ------------------------------------------
Workerman version:4.0.22          PHP version:7.3.4
------------------------------------------- WORKERS -------------------------------------------
proto   user            worker           listen                  processes    status
tcp     root            ChannelServer    frame://0.0.0.0:2206    1             [OK]
-----------------------------------------------------------------------------------------------
Input "php channelServer.php stop" to stop. Start success.
 
 
[root@localhost www.fpm.com]# /usr/local/php734/bin/php -c /usr/local/php734/lib/php/php.ini login.php start -d
Workerman[login.php] start in DAEMON mode
----------------------------------------- WORKERMAN -----------------------------------------
Workerman version:4.0.22          PHP version:7.3.4
------------------------------------------ WORKERS ------------------------------------------
proto   user            worker          listen                 processes    status
tcp     root            none            http://0.0.0.0:4237    1             [OK]
---------------------------------------------------------------------------------------------
Input "php login.php stop" to stop. Start success.
 
 
[root@localhost www.fpm.com]# /usr/local/php734/bin/php -c /usr/local/php734/lib/php/php.ini wsServer.php start -d
Workerman[wsServer.php] start in DAEMON mode
------------------------------------------- WORKERMAN --------------------------------------------
Workerman version:4.0.22          PHP version:7.3.4
-------------------------------------------- WORKERS ---------------------------------------------
proto   user            worker          listen                      processes    status
tcp     root            websocket       websocket://0.0.0.0:4236    6             [OK]
--------------------------------------------------------------------------------------------------
Input "php wsServer.php stop" to stop. Start success.
然後客戶端過載則如：