Implement custom protocol parsing in Workerman documents

Implementing custom protocol parsing in Workerman documents

When using the Workerman framework for network programming, we often need to interact with the client for data. In the process of data interaction, we often encounter situations that require custom protocols. The Workerman framework provides a convenient way to easily parse custom protocols.

First, we need to define our own protocol format. Generally speaking, the protocol format includes two parts: data packet header and data packet body. The data packet header is used to describe some basic information of the data packet, such as length, type, etc.; the data packet body is the actual transmitted data content.

Next, we need to implement the code for protocol parsing. First, in the Workerman framework, we need to receive the client's connection request by creating a Worker. You can refer to the following code example:

use WorkermanWorker;

// 创建一个Worker监听127.0.0.1:8000端口
$worker = new Worker('tcp://127.0.0.1:8000');

// 当客户端连接上来时
$worker->onConnect = function ($connection) {
    echo "New connection from ip " . $connection->getRemoteIp() . "
";
};

// 当客户端发来数据时
$worker->onMessage = function ($connection, $data) {
    // 解析数据包
    $package = parseProtocol($data);

    // 处理数据包
    handlePackage($connection, $package);
};

// 启动Worker
Worker::runAll();

// 解析数据包
function parseProtocol($data)
{
    // 解析数据包的逻辑代码

    // 返回解析后的数据包
    return $package;
}

// 处理数据包
function handlePackage($connection, $package)
{
    // 处理数据包的逻辑代码
}

In the above example code, we created a Worker of the TCP protocol and listened to the 127.0.0.1:8000 port. When the client connects, the IP address of the new connection will be printed. When the client sends data, the parseProtocol function is called to parse the data packet, and then the handlePackage function is called to process the data packet.

In actual development, we need to write specific parsing and processing logic according to our own protocol format. For example, if the protocol format is in the form of length data, you can refer to the following code example:

// 解析数据包
function parseProtocol($data)
{
    $package = array();
    $package['length'] = unpack('N', substr($data, 0, 4))[1];
    $package['body'] = substr($data, 4);

    return $package;
}

// 处理数据包
function handlePackage($connection, $package)
{
    // 获取数据包的长度和内容
    $length = $package['length'];
    $body = $package['body'];

    // 处理数据包的逻辑代码
    // ...
}

In the above code, we use the unpack function and substr function to parse the data packet. The specific analysis and processing logic can be written according to the actual situation.

Through the above sample code, we can see that it is very convenient to use the Workerman framework to implement custom protocol parsing. You only need to define the protocol format and write the corresponding parsing and processing logic. At the same time, the high performance and high reliability of the Workerman framework can also ensure the stable operation of the system. Hope this article helps you!

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