Home Backend Development PHP Tutorial PHP development: How to use Swoole to implement high-performance WebSocket server

PHP development: How to use Swoole to implement high-performance WebSocket server

Jun 15, 2023 pm 08:47 PM
php websocket swoole

With the rapid development of the Internet, WebSocket technology is becoming more and more widely used. WebSocket plays an important role in web chat, multiplayer games, real-time messaging, etc. In order to meet the growing user needs, developing high-performance WebSocket servers has become an important task. In this article, we will discuss how to use the power of Swoole to develop a high-performance WebSocket server.

  1. What is Swoole?

Swoole is a coroutine network communication engine based on the PHP language. It allows us to write asynchronous code just like writing synchronous code. This makes Swoole excellent at handling highly concurrent network communications.

In addition, Swoole provides numerous network communication components, such as WebSocket, HTTP, TCP, UDP, etc. Through these components, we can quickly build a high-performance network communication application.

  1. WebSocket component in Swoole

The WebSocket component in Swoole provides some APIs to easily implement the WebSocket protocol in PHP.

In actual use, we can parse the WebSocket data packet sent by the client by calling the API provided by the Swoole WebSocket component, and pass the data packet to the application for processing. For situations where we need to send data to the client, we can also call the API to convert the data into a WebSocket packet and send it to the client.

  1. Implementing a high-performance WebSocket server

For the implementation of a high-performance WebSocket server, we need to consider the following factors:

3.1 High concurrency

In the case of high concurrency, we need to minimize the occurrence of blocking. To address this problem, Swoole provides a non-blocking IO model based on coroutines, which allows programs to avoid blocking during network IO operations. This model can greatly improve the concurrency capability of the program.

3.2 Data Processing

The WebSocket protocol itself supports fragmented transmission of data frames, which results in data that may need to be received and spliced ​​multiple times to be fully processed. In this case, we can use the onMessage event provided by the Swoole WebSocket component to perform data splicing processing to ensure the integrity of the data.

In addition, data can also be processed through reliable message queues to ensure the orderliness and reliability of the data.

3.3 Heartbeat detection

Since WebSocket is a long link, heartbeat detection needs to be implemented in some scenarios to ensure the stability of the connection. For this situation, we can implement the heartbeat detection function through the onOpen event and onClose event provided by the Swoole WebSocket component.

After the connection is established, a coroutine is started to send heartbeat information at regular intervals. When the client responds to the heartbeat information, the heartbeat time is refreshed. If the client does not respond within a period of time, just disconnect.

  1. Example code
$server = new SwooleWebSocketServer('0.0.0.0', 9502);

$server->on('open', function (SwooleWebSocketServer $server, $request) {
    echo "server: handshake success with fd{$request->fd}
";

    // 启动心跳检测协程
    $timerId = SwooleTimer::tick(30000, function ($timerId) use ($server, $request) {
        if (!isset($server->wsTable[$request->fd])) {
            SwooleTimer::clear($timerId);
            return;
        }

        $server->push($request->fd, 'ping');
    });

    // 记录 fd 和定时器 ID
    $server->wsTable->set($request->fd, ['timerId' => $timerId]);
});

$server->on('message', function (SwooleWebSocketServer $server, $frame) {
    echo "received message: {$frame->data}
";

    // 数据处理
});

$server->on('close', function (SwooleWebSocketServer $server, $fd) {
    echo "client {$fd} closed
";

    // 关闭心跳检测协程
    if ($server->wsTable->exist($fd)) {
        $timerId = $server->wsTable->get($fd)['timerId'];
        SwooleTimer::clear($timerId);
    }
});

$server->start();
Copy after login

In the above code, $server->wsTable is one provided by Swoole that allows us to easily process data Shared data structures. Here, we put the timer ID of each client connection in $server->wsTable so that when the onClose event occurs, the heartbeat detection coroutine can be cleared through the timer ID .

  1. Summary

Using Swoole can easily implement a high-performance WebSocket server. During the implementation process, attention needs to be paid to issues such as high concurrency, data processing, and heartbeat detection. By properly using the API provided by Swoole, the reliability and stability of data can be ensured while improving performance.

The above is the detailed content of PHP development: How to use Swoole to implement high-performance WebSocket server. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

7 PHP Functions I Regret I Didn't Know Before 7 PHP Functions I Regret I Didn't Know Before Nov 13, 2024 am 09:42 AM

If you are an experienced PHP developer, you might have the feeling that you’ve been there and done that already.You have developed a significant number of applications, debugged millions of lines of code, and tweaked a bunch of scripts to achieve op

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Apr 05, 2025 am 12:04 AM

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

How do you parse and process HTML/XML in PHP? How do you parse and process HTML/XML in PHP? Feb 07, 2025 am 11:57 AM

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

PHP Program to Count Vowels in a String PHP Program to Count Vowels in a String Feb 07, 2025 pm 12:12 PM

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

Explain late static binding in PHP (static::). Explain late static binding in PHP (static::). Apr 03, 2025 am 12:04 AM

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? Apr 03, 2025 am 12:03 AM

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.

See all articles