Implement the request filtering function in the Workerman document

Due to word limit, the following is a summary of an article about implementing the Workerman request filtering function.

Title: Using Workerman to implement request filtering function

In network application development, we often encounter the need to filter requests to enhance the security and stability of the application. As an excellent PHP asynchronous network programming framework, Workerman provides rich APIs and functions, making it easy to implement request filtering functions.

In order to implement the request filtering function, we can use the relevant interfaces and features provided by Workerman, combined with specific business needs, to write corresponding code. The following will introduce how to use Workerman to implement the request filtering function and provide specific code examples.

First of all, we need to clarify the purpose and rules of request filtering, such as restricting access to specific IP addresses, intercepting malicious requests, filtering specific request parameters, etc. Then, we can use the onMessage event in Workerman to write the corresponding processing function in which to filter the request.

The following is a simple example that implements the function of blocking access to specific IP addresses:

use WorkermanWorker;

$ip_blacklist = ['192.168.1.100', '192.168.1.101']; // 黑名单IP列表

$worker = new Worker('tcp://0.0.0.0:8080');
$worker->onMessage = function ($connection, $data) {
    $client_ip = $connection->getRemoteIp();
    if (in_array($client_ip, $ip_blacklist)) {
        $connection->close(); // 如果客户端IP在黑名单中，直接关闭连接
    } else {
        // 处理正常请求
    }
};
Worker::runAll();

In the above example, we define a blacklist list of IP addresses$ip_blacklist, and then obtain the client's IP address in the onMessage event. If the IP address is in the blacklist, close the connection directly; otherwise, perform normal request processing.

In addition to IP address filtering, we can also implement more complex request filtering functions based on specific business needs, such as checking request parameters, filtering request content, etc.

In short, using the Workerman framework, we can easily filter requests and improve the security and stability of network applications. I hope the above examples can help readers better understand and apply the request filtering function in the Workerman framework.

Through the above brief introduction and code examples, we can see that it is quite simple and flexible to use the Workerman framework to implement the request filtering function. Readers can write more complex and rich request filtering logic based on their actual needs, combined with the API and functions provided by Workerman, to ensure the safe and stable operation of network applications.

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