Workerman development: How to implement a broadcast system based on UDP protocol

Workerman is a high-performance, scalable, protocol-independent PHP socket framework. When developing a real-time message push system, broadcasting is often needed to achieve fast and efficient delivery of messages. This article will introduce how to use the Workerman framework to implement a broadcast system based on the UDP protocol, and provide corresponding code examples.

1. Introduction to UDP Protocol

UDP (User Datagram Protocol) is a connectionless, unreliable transmission protocol, usually used for real-time transmission of data. Compared with the TCP protocol, UDP does not guarantee the reliability and sequence of data, but due to its connectionless characteristics, the transmission speed of data packets is faster and the delay is lower.

2. Introduction to Workerman Framework

Workerman is a PHP socket framework suitable for high-performance, multi-process, asynchronous IO network application development. Workerman supports multiple protocols such as TCP, UDP, and Unix sockets, and provides an event-driven asynchronous programming model that can easily implement network applications such as long connections, message push, and game servers.

3. Implementing a broadcast system based on UDP protocol

3.1 System architecture design

The broadcast system based on UDP protocol mainly includes two components: broadcast server and client. The broadcast server is responsible for receiving messages from clients and broadcasting the messages to all online clients. The client can send and receive messages in the broadcast system by sending messages to the broadcast server.

3.2 Code Implementation

3.2.1 Broadcast Server Code Implementation

The broadcast server is developed using the Workerman framework and written in PHP language. The main function of the broadcast server is to receive client messages and broadcast the messages to all online clients. The code is as follows:

use WorkermanWorker;
use WorkermanConnectionUdpConnection;

// 创建广播服务器
$broadcast_worker = new Worker("udp://0.0.0.0:5678");

// 设置进程数量
$broadcast_worker->count = 4;

// 处理客户端消息
$broadcast_worker->onMessage = function(UdpConnection $connection, $data)
{
    // 广播消息给所有在线客户端
    foreach($broadcast_worker->connections as $client_connection)
    {
        $client_connection->send($data);
    }
};

// 运行服务器
Worker::runAll();

3.2.2 Client code implementation

The client is written in PHP language and implements the function of sending messages to the broadcast server and receiving broadcast messages. The client code is as follows:

use WorkermanConnectionAsyncUdpConnection;

// 创建异步UDP连接
$client_connection = new AsyncUdpConnection("udp://127.0.0.1:5678");

// 处理广播消息
$client_connection->onMessage = function($connection, $data)
{
    echo "Received broadcast message: $data
";
};

// 连接广播服务器
$client_connection->connect();

// 发送消息
$client_connection->send("Hello, World!");

// 等待广播消息
while(true)
{
    // 不断触发事件循环
    WorkermanWorker::getInstance()->loop();
}

4. Summary

This article introduces how to use the Workerman framework to implement a broadcast system based on the UDP protocol, and provides corresponding code examples. The broadcast system can be widely used in real-time communication scenarios such as real-time message push and game servers. By using the UDP protocol to achieve fast and efficient transmission of messages, the performance and response speed of the system are improved.

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