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

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

In network application development, various problems are often encountered. As a high-performance PHP communication framework, Workerman can easily handle a large number of concurrent connections, but there are also some common problems that need to be paid attention to and solved. This article will take you through the common problems and solutions during the development of Workerman, and attaches code examples. I hope it can help you with the troubles you encounter in the development of Workerman.

Question 1: How to solve cross-domain problems?
There are many ways to solve cross-domain problems, but in Workerman, it can be solved by setting header information in the GatewayWorker process. The following is a sample code to implement cross-domain processing:

use WorkermanProtocolsHttp;

$http->header('Access-Control-Allow-Origin: *');
$http->header('Access-Control-Allow-Methods: GET');
$http->header('Access-Control-Allow-Headers: Content-Type');

Question 2: How to implement the mixed use of WebSocket and HTTP protocols?
In Workerman, you can use the built-in WebSocket protocol and HTTP protocol of the GatewayWorker process to achieve mixed use of WebSocket and HTTP protocols. The following is a simple sample code:

use GatewayWorkerProtocolsGatewayProtocol;

// 处理WebSocket请求
if ($http->headers['upgrade'] && strtolower($http->headers['upgrade']) == 'websocket') {
    $gatewayProtocol = new GatewayProtocol();
    $gatewayProtocol::input($http, $connection);
} else {
    // 处理HTTP请求
    // ...
}

Question 3: How to maintain a long connection?
Long connections are a common requirement in network applications, and Workerman also provides methods for maintaining long connections. The following is a sample code to achieve long connection maintenance:

use WorkermanLibTimer;

$keep_alive_time = 55;

$connection->keepalive = true;

$connection->onWebSocketConnect = function ($connection, $http_header) use ($keep_alive_time) {
    Timer::add($keep_alive_time, function () use ($connection) {
        $connection->send('ping');
    });
};

$connection->onMessage = function ($connection, $message) {
    if ($message === 'ping') {
        // 处理ping消息
        $connection->send('pong');
    } else {
        // 处理其他消息
    }
};

Question 4: How to implement a custom protocol?
In some special scenarios, we may need to implement a custom communication protocol, and Workerman provides corresponding interfaces to meet this need. The following is a sample code to implement a custom protocol:

use WorkermanConnectionTcpConnection;

$connection->protocol = new class extends TcpConnection {
    public function onMessage($connection, $data)
    {
        // 处理自定义协议的数据
    }
};

Question 5: How to optimize performance?
Workerman is already a high-performance framework, but it may still encounter performance bottlenecks in specific scenarios. The following are some optimization suggestions:

1. Enable multi-port listening: You can specify multiple ports at the listening port of the GatewayWorker process so that each port can listen to as few connections as possible to improve the overall concurrency capability. .
2. Use caching mechanisms such as Redis: For frequently read and written data, you can use caching mechanisms such as Redis to reduce database load.
3. Optimize code: Try to avoid using time-consuming operations such as loops and recursion to reduce the consumption of various resources.

This article is just a brief introduction to some common problems and solutions during the development process of Workerman. The actual situation may be more complicated. I hope that sharing this article can provide some help and reference for the troubles you encounter in Workerman development. If you encounter other problems when using Workerman, it is recommended to read the official documentation carefully or participate in discussions in the Workerman community to obtain more solutions and experience.

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