Workerman Development Pitfall Guide: Summary of Experience in Solving Common Problems in Network Applications

Workerman Development Pitfall Guide: Summary of Experience in Solving Common Problems in Network Applications

Introduction:
With the rapid development of the Internet, the development of network applications has become more and more common. As a high-performance PHP open source network application framework, Workerman is used more and more widely. However, during development with Workerman, we may encounter some common problems. This article will summarize experience, give some methods to solve these problems, and attach corresponding code examples.

1. Connection disconnection problem
In network applications, connection disconnection is a common problem. The working principle is this: the client establishes a connection with the server, and when the connection is disconnected, the server needs to detect and handle it in time. We can use the disconnect callback function that comes with the Workerman framework to solve this problem.

The sample code is as follows:

// 创建一个Worker对象
$worker = new Worker('tcp://0.0.0.0:8000');

// 客户端连接时触发的回调函数
$worker->onConnect = function($connection)
{
    echo "Connection established
";
};

// 客户端断开连接时触发的回调函数
$worker->onClose = function($connection)
{
    echo "Connection closed
";
};

// 启动Worker对象
Worker::runAll();

2. Data sticking problem
In network applications, due to the limitations of network transmission, the message is often not guaranteed to reach the receiver completely in one transmission. This leads to the problem of data packet sticking, that is, data sent multiple times will stick together. In order to solve this problem, we can use the Protocols provided by Workerman for data subcontracting and processing.

The sample code is as follows:

use WorkermanProtocolsText;

// 定义自定义协议类
class MyProtocol
{
    public static function input($recv_buffer, $connection)
    {
        // 省略解包逻辑
    }
    
    public static function decode($recv_buffer, $connection)
    {
        // 省略数据处理逻辑
    }
}

// 创建一个Worker对象
$worker = new Worker('tcp://0.0.0.0:8000');

// 设置自定义协议类
Text::$protocol = new MyProtocol();

// 客户端发送数据时触发的回调函数
$worker->onMessage = function($connection, $data)
{
    echo "Received data: " . $data . "
";
};

// 启动Worker对象
Worker::runAll();

3. Multi-process problem
In high concurrency situations, a single process cannot meet the demand, we can use Workerman's multi-process mode. Each process can handle requests from clients, effectively improving processing capabilities.

The sample code is as follows:

// 创建一个Worker对象
$worker = new Worker('tcp://0.0.0.0:8000');

// 设置进程数为4
$worker->count = 4;

// 客户端发送数据时触发的回调函数
$worker->onMessage = function($connection, $data)
{
    echo "Received data: " . $data . "
";
};

// 启动Worker对象
Worker::runAll();

Conclusion:
By summarizing the solutions to common problems in the Workerman development process, we can deal with the problems encountered more calmly. In actual development, we may encounter other more complex problems, but as long as we maintain an attitude of learning and exploration, I believe we will always find a solution. As a high-performance PHP open source network application framework, Workerman provides a lot of convenience for our development. I hope this article can be helpful to everyone.

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