Implement the WebSocket communication function in the Workerman document

To implement the WebSocket communication function in the Workerman document, specific code examples are required

Websocket is a protocol for full-duplex communication on a single TCP connection. Workerman is a high-performance PHP Socket server framework that can be used to build fast, high-performance web applications. In the official Workerman documentation, there are detailed instructions on how to implement WebSocket communication. This article will provide you with specific code examples.

First, we need to create a WebSocket class in the Workerman framework to handle the WebSocket handshake process and message sending. The following is a sample code of the simplest WebSocket class:

use WorkermanWorker;
use WorkermanLibTimer;

// 创建一个Worker监听端口，使用WebSocket协议通讯
$ws_worker = new Worker('websocket://127.0.0.1:8000');

// 启动4个进程对外提供服务
$ws_worker->count = 4;

// 当客户端连接上WebSocket服务时的回调函数
$ws_worker->onConnect = function($connection){
    echo "New connection 
";
};

// 当客户端发送数据到WebSocket服务时的回调函数
$ws_worker->onMessage = function($connection, $data){
    // 发送数据到客户端
    $connection->send('Received: '.$data);
};

// 当客户端与WebSocket服务断开连接时的回调函数
$ws_worker->onClose = function($connection){
    echo "Connection closed 
";
};

// 运行Worker
Worker::runAll();

In the above sample code, we first create a Worker with a WebSocket listening port to provide external services. Then set the callback function when the client connects to the WebSocket service, sends data to the WebSocket service, and disconnects from the WebSocket service. In the callback function, the received data can be processed and the processing results are sent to the client.

Next, we need to run the above code in the command line to start the WebSocket server. The command line output will display the startup process of the WebSocket service, including information related to client connection, data transmission, and disconnection.

After starting the WebSocket server, we can use a browser or other WebSocket client tools to connect to the server's address, send data and receive the server's response. The following JavaScript code can be used as an example of a WebSocket client:

var ws = new WebSocket("ws://127.0.0.1:8000");

// 连接成功时的回调函数
ws.onopen = function(){
    console.log("Connected.");
    ws.send("Hello Server.");
};

// 接收到服务器数据时的回调函数
ws.onmessage = function(evt){
    console.log("Received Message: "+evt.data);
    ws.close();
};

// 与服务器断开连接时的回调函数
ws.onclose = function(){
    console.log("Connection closed.");
};

After running the above JavaScript code, the browser's developer tools console will output information related to the connection, data transfer, and disconnection of the WebSocket service.

Through the above code examples, we successfully implemented the WebSocket communication function in the Workerman framework. In actual development, we can extend the WebSocket class according to needs to implement more complex and flexible business logic. In addition, the Workerman framework also provides other powerful functions, such as asynchronous IO, timers, etc., which can help us build high-performance and reliable web applications.

To summarize, to implement the WebSocket communication function in the Workerman document, we need to create a WebSocket class and set up related callback functions to handle operations such as connection, data transmission, and disconnection. Through a browser or other WebSocket client tools, we can exchange data with the server. The Workerman framework is high-performance and flexible and can help us build stable and efficient web applications.

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