Workerman development: real-time video call based on UDP protocol
Abstract: This article will introduce how to use the Workerman framework to implement the real-time video call function based on UDP protocol. We will have an in-depth understanding of the characteristics of the UDP protocol and show how to build a simple but complete real-time video call application through code examples.
Introduction: In network communication, real-time video calling is a very important function. The traditional TCP protocol may have problems such as transmission delays when implementing high-real-time video calls. Due to its connectionless and stateless characteristics, the UDP protocol is widely used in real-time audio and video communication and other fields. Workerman is a high-performance PHP asynchronous network communication framework that supports UDP protocol and provides a simple and easy-to-use API interface, allowing us to easily implement real-time video call functions based on UDP protocol.
1. Characteristics of UDP protocol
UDP (User Datagram Protocol) is a connectionless transmission protocol. Compared with TCP, it has the following characteristics:
2. Implement real-time video call based on UDP protocol
The following takes a simple real-time video call as an example to demonstrate how to use the Workerman framework to implement:
Server-side implementation
Create a server.php file in the project directory as the server-side code:
<?php require_once __DIR__ . '/Autoload/Autoloader.php'; // 引入自动加载文件 $udpWorker = new WorkermanWorker('udp://0.0.0.0:8888'); // 创建一个UDP Worker实例 $udpWorker->count = 4; // 设置启动的进程数 $udpWorker->onMessage = function($connection, $data){ foreach($udpWorker->connections as $clientConnection){ // 遍历所有连接 $clientConnection->send($data); // 发送数据 } }; WorkermanWorker::runAll(); // 启动服务
Client-side implementation
Create a client.php file in the project directory as the client code:
<?php require_once __DIR__ . '/Autoload/Autoloader.php'; // 引入自动加载文件 $worker = new WorkermanWorker(); $worker->onWorkerStart = function(){ $clientConnection = new WorkermanConnectionAsyncUdpConnection('udp://127.0.0.1:8888');// 创建UDP连接 $clientConnection->onConnect = function(){ echo 'connect success'; // 连接成功回调函数 }; $clientConnection->onMessage = function($connection, $data){ echo 'receive data:' . $data; // 收到数据的回调函数 }; $clientConnection->connect(); // 发起连接 }; WorkermanWorker::runAll(); // 启动客户端
Conclusion: This article introduces how to use the Workerman framework to implement a real-time video call function based on the UDP protocol. The characteristics of the UDP protocol and the use of the Workerman framework are explained in detail, and implementation code examples are given. I hope this article can help everyone understand and use the Workerman framework.
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