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Workerman Development Practice Sharing: Realizing High Stability Instant Chat System
Introduction:
Instant chat system is a very important part of today's Internet applications, which allows users to communicate and share information in real time. However, in order to achieve a highly stable instant chat system, developers need to consider issues such as network latency, concurrent connection management, and system reliability. This article will introduce the use of Workerman framework to develop a highly stable instant chat system and provide corresponding code examples.
<?php require_once './Workerman/Autoloader.php'; use WorkermanWorker; use WorkermanLibTimer; $worker = new Worker("websocket://0.0.0.0:8000"); $worker->count = 4; $worker->onWorkerStart = function($worker) { Timer::add(1, function() use($worker) { $connections = $worker->connections; foreach($connections as $connection) { $connection->send(time()); } }); }; $worker->onMessage = function($connection, $data) { // 处理客户端发送的消息 }; Worker::runAll();
The above sample code uses Workerman's Worker class and Timer class. The Worker class represents a Worker process and sends messages to the client regularly through the onWorkerStart callback function. The Timer class is used to set the timer and send the current time to all connected clients every second.
$worker = new Worker("websocket://0.0.0.0:8000"); // 用户列表 $users = []; $worker->onConnect = function($connection) use(&$users) { // 新建连接,添加到在线用户列表 $users[$connection->id] = $connection; }; $worker->onClose = function($connection) use(&$users) { // 连接关闭,从在线用户列表移除 unset($users[$connection->id]); }; $worker->onMessage = function($connection, $data) use(&$users) { // 处理客户端发送的消息 foreach($users as $user) { $user->send($data); } };
In the above code, by defining the onConnect and onClose callback functions, we can handle new connections and connections when they are closed. to add or remove connections to or from the list of online users. After receiving the message sent by the client, you can traverse the list of online users and send the message to each user.
$worker->onError = function($connection, $code, $msg) { // 错误处理 }; $worker->onClose = function($connection) use(&$users) { // 连接关闭,从在线用户列表移除 unset($users[$connection->id]); };
In the above example code, we handle errors such as connection loss, connection timeout, etc. by defining the onError callback function.
Conclusion:
This article introduces the practical experience of using the Workerman framework to develop a highly stable instant chat system. Through appropriate system architecture design and using the functions and classes provided by Workerman, we can implement a highly stable instant chat system that can handle concurrent connections, manage online user lists, handle exceptions, etc. I hope this article will be helpful to developers of instant chat systems.
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